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Jeon BC, Kim YJ, Park AK, Song MR, Na KM, Lee J, An D, Park Y, Hwang H, Kim TD, Lim J, Park SK. Dynamic O-GlcNAcylation governs long-range chromatin interactions in V(D)J recombination during early B-cell development. Cellular & molecular immunology 2025 22(1) 39627609
Abstract:
V(D)J recombination secures the production of functional immunoglobulin (Ig) genes and antibody diversity during the early stages of B-cell development through long-distance interactions mediated by cis-regulatory elements and trans-acting factors. O-GlcNAcylation is a dynamic and reversible posttranslational modification of nuclear and cytoplasmic proteins that regulates various protein functions, including DNA-binding affinity and protein-protein interactions. However, the effects of O-GlcNAcylation on proteins involved in V(D)J recombination remain largely unknown. To elucidate this relationship, we downregulated O-GlcNAcylation in a mouse model by administering an O-GlcNAc inhibitor or restricting the consumption of a regular diet. Interestingly, the inhibition of O-GlcNAcylation in mice severely impaired Ig heavy-chain (IgH) gene rearrangement. We identified several factors crucial for V(D)J recombination, including YY1, CTCF, SMC1, and SMC3, as direct targets of O-GlcNAc modification. Importantly, O-GlcNAcylation regulates the physical interaction between SMC1 and SMC3 and the DNA-binding patterns of YY1 at the IgH gene locus. Moreover, O-GlcNAc inhibition downregulated DDX5 protein expression, affecting the functional association of CTCF with its DNA-binding sites at the IgH locus. Our results showed that locus contraction and long-range interactions throughout the IgH locus are disrupted in a manner dependent on the cellular O-GlcNAc level. In this study, we established that V(D)J recombination relies on the O-GlcNAc status of stage-specific proteins during early B-cell development and identified O-GlcNAc-dependent mechanisms as new regulatory components for the development of a diverse antibody repertoire.
O-GlcNAc proteins:
MPEG1, CUL4B, DHX8, RHG27, VIR, PNISR, FRPD1, RENT2, LAS1L, ITIH4, THOC2, MMRN1, PYR1, YTDC2, PTPRB, ANR44, RBM25, OSBL8, DAAF5, SAFB1, KI67, DESP, YTDC1, UBE4A, NUMA1, MORC3, HXK2, LEG9, KNG1, UBE3A, DCTN1, DIAP1, U5S1, RL21, PHB2, CPSF2, DHX15, EXOC4, STAG2, AP1B1, PININ, HNRH1, SP100, GP1BA, ITB3, RL35A, SPT5H, DHX9, E41L2, BAZ1A, ZFR, ROA2, PRS6A, FA5, AFAM, COR1A, SP1, C1QR1, COX2, AMY1, CO3, CO4B, B2MG, HBA, HBB1, K1C10, K2C1, CFAB, ALDOA, TBA1B, TBA3, ITAM, K1C18, LDHA, LCK, APOA4, PTPRC, CFAH, TTHY, ANXA2, ALBU, A1AT1, SPA3K, HS90A, TRFL, ENPL, APOE, MDHM, GNAI2, RPB1, ITB1, PDIA1, NUCL, APOA2, PTPRQ, CALM2, EF1A1, 4F2, PARP1, PERM, FINC, HS90B, K2C8, ITA5, ITB2, TCPA, RL7A, GELS, ICAM1, DNMT1, S10A6, RL27A, RS16, RL7, RSSA, LMNB1, ANXA6, RLA0, CD44, LEUK, H12, CN37, AMPE, HS71L, G3P, LAMP2, HSP72, ENOA, PTBP1, PPIA, TPIS, LYZ1, PCNA, PTPRA, BASI, KS6A1, KS6A3, COF1, FAS, THRB, RL13A, BIP, VIME, PLMN, VTDB, A1AT2, CBL, AP1G1, EIF3A, EST1C, ITAL, CD11B, MCM3, RS2, CD19, UBF1, TLN1, EZRI, MOES, KLKB1, H2AX, VAV, NCKP1, MUG1, KIF2A, DPP4, PTN6, FETUA, C5AR1, CEAM1, CD68, ANT3, SYWC, KIF4, DPOLA, RAB5C, RAB18, CD22, TSP1, CALX, RFC1, PRDX1, RL12, RL18, DNLI1, HSPA9, DYN2, RL28, MMP9, STAT1, STA5B, EPS15, TCPQ, MSH2, H14, H15, RAGP1, SIPA1, NSF, PRS7, BRCC3, NEDD4, CAPZB, RL6, RL5, RL13, RL36, KSYK, PERE, ROA1, MCM4, MCM5, SAHH, K2C6A, VATA, PA2G4, RAB7A, RL9, ADT2, IMA1, PON1, DPOD1, UBP10, KPYM, STAT6, RL10A, CEBPZ, PIPNB, MSH6, UBP5, ATPB, UBP25, NICA, ACTN4, EF2, OPA1, FOXP1, TPM2, WDHD1, ARPC4, RUVB1, PCBP1, ACTB, IF4A1, RS20, UB2D3, ARF3, RL26, RL27, RL37A, ARF4, HNRPK, RS7, PRS4, RS8, RS15A, RS14, RS23, RS18, RS11, RS13, SMD2, ARF6, PRS10, RS4X, RL18A, RL23A, RS6, H4, VATB2, RAB1A, RAN, RL23, RS24, RS25, RS26, RL30, RL31, RS3, RL8, PROF1, RL40, HSP7C, PHB1, RL22, RACK1, ACTS, TBA4A, TBB4B, 1433F, IMB1, M4K1, PKN1, STIM1, PYRG2, ROCK1, RAD50, PYRG1, TCPH, TCPB, TCPD, TCPE, TCPZ, TCPG, WNK1, RHOG, RL19, H33, BACH2, MCM2, MCM6, RS3A, ANX11, SMRC1, FUMH, ARVC, TBB5, APOA1, A1AT4, TYY1, HNRL2, LYAM3, TOP2A, APOH, TERA, UBA1, PLAK, ATPA, IKZF1, SPA3M, SMRCD, TOP1, RAC2, PYC, IF2P, CBG, ACADS, AMBP, PECA1, SSRP1, ZCH18, K2C80, PSA, PTCD3, NSUN2, EDEM3, MCM9, TMC5, HMHA1, HP1B3, GUAA, H2AV, SMCA4, PRC2C, MIDN, K1C26, K22E, PSMD1, BRE1B, ESYT1, AAK1, RHG17, EDC4, UBP19, GPD1L, ELNE, SC31A, IQGA2, K22O, ITB2L, C1TM, UN13A, PLCH1, PDS5B, CENPJ, DDX46, TR150, A16A1, EHMT1, MCTP2, RBM27, CYFP2, PSME4, MYO1G, LC7L3, PUR4, MYH1, LEO1, SIN3A, XRCC1, ODO1, HNRPD, SAMH1, HELLS, ARHG2, I17RA, PML, 2A5G, PPM1G, CFAI, CERU, CTCF, PRDX2, EZH2, HCFC1, PA1B3, ARHG1, PLSL, A2AP, HSP74, DSG1A, GSLG1, EWS, RAD21, FSCN1, GDIB, DDX5, HS105, ITIH2, ITA6, EI2BD, SERA, KINH, PDCD4, PZP, PRG2, MYH10, MCM7, NPM, PCBP2, CTR9, DDX3X, CD180, SPTB2, SPR1A, TIF1B, TFR1, RU17, SPT6H, NDUA4, IF4G2, MINT, RHG30, H2B1B, TOP2B, TPP2, AT2A3, H2A2C, VINC, PUR2, CLH1, SYMC, GNPTA, PDS5A, CDC5L, CE290, F120A, UBP7, JADE3, K1C42, K2C72, SR140, K2C73, S23IP, IF4G1, RBM26, P4R3A, U520, ABCF1, SMHD1, UGGG1, XPO1, ANO6, KIF15, KIF11, FHOD1, FKB15, PTN23, LPPRC, SMRC2, ECM29, CHD4, PK3C3, NUP98, GMIP, NFRKB, TEX2, UBE2O, KDM3B, CE162, CNOT1, CAND1, LARP1, VIP2, RS9, RL35, RS27L, 2AAA, SND1, ASAP2, IPO8, HUWE1, LC7L2, MBB1A, INT7, CTDP1, PP6R1, ELP1, DCAF1, CLAP1, SCRIB, PUM1, NU214, NAA15, FACD2, FBLL1, UBP2L, SYMPK, SIG10, DDX42, ANFY1, EFTU, TNPO1, ROA3, PLD4, SYAC, S2512, NU107, PTBP3, NRDC, ERC6L, GANAB, SP130, NUP93, SUN2, RCC2, IPO5, EMSY, ODP2, RBGPR, SYLC, SYQ, ECHA, RL24, CLAP2, CNDH2, PB1, FLNA, SYIC, IFIX, CIP2A, GEMI5, UBP47, CTL2, TBCD, POGZ, ANC2, KS6A5, EFL1, LCAP, DOCK8, CND2, IWS1, RBM14, DOCK2, UBA6, MIC60, UFL1, VCIP1, NUP88, NED4L, RPB2, AQR, SMC4, SMC2, SYEP, TCRG1, LONM, OGT1, CHERP, CCAR1, INT5, PYGB, COPA, PLCG2, INT4, EIF3B, BCLF1, K319L, URP2, DNM1L, NEK9, FCHO1, PAF1, IPO11, CND1, MATR3, PLCL2, DP13A, PO121, SF3A1, HNRPL, NU133, EIF3C, BST2, CD177, ADIPL, CDC16, STPAP, LRC8C, ACSF2, EVI2B, MYH9, UHRF1, VIGLN, ADPGK, PSMD2, HNRL1, AT1A1, MICA1, CCAR2, DX39A, SRSF4, K2C79, RFA1, HNRPU, S25A3, RBM39, SEC63, IPO4, SFPQ, ACLY, IF4A3, NDUS1, ATPG, DDX1, UBAP2, HEMO, IPO9, RBM5, PRP6, SMCA5, SP16H, TADBP, SF3B3, SYDC, PP6R3, C1TC, NOP2, PDE2A, KIF2C, K2C5, SIR1, XPO5, SMRD2, ECHB, ARP3, EMIL1, UN45A, ACON, DPP3, HSP7E, GTPB4, ARBK1, SRRT, SF3B1, NU155, RRBP1, DHX30, RL17, NUDC2, 6PGL, COTL1, RM18, TRAP1, AT5F1, RL14, XPOT, PRPS2, RRP44, SMC1A, SMUF1, SMC3, PUR9, SNX2, ROA0, RL11, GARS, RL15, MTREX, MMS19, HNRPM, SYRC, NH2L1, RL34, GRIFN, UB2V2, S10AE, CORO7, STAG1, CUL5, SC23B, CALL3, NOP56, RL4, EF1G, PRP4, QCR2, PELP1, AP2B1, XRN2, NVL, EIF3K, 6PGD, SYF1, EIF3F, XPO7, IPO7, RENT1, BCAP, PESC, ERAP1, VPS35, EHD4, TFP11, XPO2, PKHA2, RBP2, UBE4B, SHIP1, HRG, XPO4, AN32B, GTF2I, DYHC1, STK4, COPB, DDX21, ACINU, FLII, IQGA1, HYOU1, HIP1R, FMNL1, SACS, SART3, GIT2, MY18A, ITA2B, FAK2, CAF1A, K1C17, FETUB, PLEC, PO210, ADDA, PCLO, COPG1, UBQL2, H2AY, ZEB2, GALK1, SC11A, MTA2, PR40A, TIM, MYO1C, INSRR, MD1L1, PDC6I, PFKAP, CXA10, GANP, IF2G, ADNP, P5CS, SAE2, ARI1, DX39B, CLIC1, SYVC, AP3B1, ILF3, USO1, HNRPC, BAZ1B, K1C16, SNUT1
Species: Mus musculus
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Lanzillotta C, Prestia F, Greco V, Iavarone F, Cordella F, Sette C, Forte E, Tramutola A, Lanzillotta S, Cassano T, Di Angelantonio S, Urbani A, Barone E, Perluigi M, Di Domenico F. Enhancing protein O-GlcNAcylation in down syndrome mice mitigates memory dysfunctions through the rescue of mitochondrial bioenergetics, stress responses and pathological markers. Redox biology 2025 85 40684658
Abstract:
Disturbances of the single sugar modification of proteins, O-GlcNAc, have been identified as a potential connection between disrupted brain metabolism and intellectual decay. In Alzheimer disease (AD), the reduced uptake of glucose in the brain results in aberrant O-GlcNAc cycling contributing to redox imbalance and neurodegeneration. Notably, alterations of O-GlcNAc homeostasis, associated with impaired O-GlcNAc transferase (OGT)/O-GlcNAcase (OGA) regulation, foster neuropathological mechanisms characterized by the presence of AD hallmarks in Down syndrome (DS) models. In the present study we examined the ability of Thiamet G (TMG), a well-known OGA inhibitor, in improving bio-energetic processes, inducing stress responses, reducing AD-related signatures and ameliorating cognition in a murine model of DS. Our data demonstrate that short-term intranasal administration of TMG restored OGA activity and normalized the global O-GlcNAc profile in mouse cortices. By a proteomic approach we identified protein components whose increased O-GlcNAc levels rescue, resulted to brain molecular and cognitive improvements. Remarkably, these included elements involved in energy production, neuronal architecture, antioxidant and stress response mechanisms. The ability of TMG in rescuing O-GlcNAc cycle and metabolic changes, associated with improved mitochondrial activity in cortical tissue, was further accompanied by changes in the O-GlcNAc/phospho ratio of APP and Tau. Functional improvements translated in enhanced recognition memory in Ts2Cje mice. Our study highlights the pivotal role of altered protein O-GlcNAcylation in DS neuropathology and establishes the molecular basis to envision the O-GlcNAc process as a promising therapeutic target to mitigate genetic- and metabolism-driven brain alterations linked to redox imbalance, mitochondrial failure and the development of AD features.
Species: Mus musculus
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Gonzalez-Rellan MJ, Parracho T, Heras V, Rodriguez A, Fondevila MF, Novoa E, Lima N, Varela-Rey M, Senra A, Chantada-Vazquez MDP, Ameneiro C, Bernardo G, Fernandez-Ramos D, Lopitz-Otsoa F, Bilbao J, Guallar D, Fidalgo M, Bravo S, Dieguez C, Martinez-Chantar ML, Millet O, Mato JM, Schwaninger M, Prevot V, Crespo J, Frühbeck G, Iruzubieta P, Nogueiras R. Hepatocyte-specific O-GlcNAc transferase downregulation ameliorates nonalcoholic steatohepatitis by improving mitochondrial function. Molecular metabolism 2023 75 37453647
Abstract:
O-GlcNAcylation is a post-translational modification that directly couples the processes of nutrient sensing, metabolism, and signal transduction, affecting protein function and localization, since the O-linked N-acetylglucosamine moiety comes directly from the metabolism of glucose, lipids, and amino acids. The addition and removal of O-GlcNAc of target proteins are mediated by two highly conserved enzymes: O-linked N-acetylglucosamine (O-GlcNAc) transferase (OGT) and O-GlcNAcase (OGA), respectively. Deregulation of O-GlcNAcylation has been reported to be associated with various human diseases such as cancer, diabetes, and cardiovascular diseases. The contribution of deregulated O-GlcNAcylation to the progression and pathogenesis of NAFLD remains intriguing, and a better understanding of its roles in this pathophysiological context is required to uncover novel avenues for therapeutic intervention. By using a translational approach, our aim is to describe the role of OGT and O-GlcNAcylation in the pathogenesis of NAFLD.
O-GlcNAc proteins:
DJC25, TITIN, FIBA, AOXC, LEG9, CLCA, MTP, MYH11, NTCP, PRDX6, DLDH, HCD2, GLU2B, PRDX4, RL21, GSH0, HGD, AMACR, PHB2, DOPD, PSMD4, SRSF5, PAHX, AGT1, S27A2, BHMT1, ANXA3, AP1B1, CP4AE, TIM44, CALU, AL1A7, OST48, PGRC1, COPB2, NIPS1, RL35A, AT2A2, PSB5, DPM1, EIF3D, EF1B, NMT1, UGDH, DHB12, WDR1, RDH7, ROA2, COMT, JAM1, IDHC, CP8B1, COPE, RBM3, CP1A1, ADH1, COX1, COX2, CO3, HVM14, IGKC, IGHG1, B2MG, HA1B, HBA, HBB1, K1C10, NU3M, ATP8, K2C1, ALDOA, AATC, AATM, K1C18, LDHA, G6PI, MAOX, ANXA2, ALBU, SPA3K, HS90A, PDIA4, ENPL, APOE, SODC, MDHM, PDIA1, NUCL, PGK1, FRIH, SODM, EF1A1, CATB, THIO, GSTM1, RRAS, H10, GPX1, HS90B, MUP2, K2C8, CP2D9, OTC, TCPA, FABPL, PDCD6, RL7A, MYH8, GPDA, RL27A, RS16, RL7, MDHC, RSSA, CALR, GTR2, HSPB1, PSMD3, ANXA6, RLA0, GLNA, NDKA, CAH3, LEG3, SRP14, PH4H, MUTA, ASSY, G3P, ENOA, PTBP1, AP2A2, SBP1, COX7C, UDB17, PPIA, TPIS, PTPRA, CATD, COF1, FAS, GSTP1, RL13A, COX5B, COX41, BIP, PRDX3, VIME, CP2A5, TPM3, VTDB, TGM2, EIF3A, MOV10, CATA, PPIB, CP2DA, LKHA4, AL1A1, CO8A2, RS2, URIC, TLN1, MOES, RADI, 3BHS3, CTNA1, U2AF2, DHE3, SYSC, MA2A1, RL3, PDIA3, PSB8, ACOHC, APEX1, ADHX, MUG1, GRN, DPP4, PABP1, FRIL1, OAT, VTNC, GSTA3, CTND1, ACBP, SCP2, LA, DRG1, CP2F2, HYES, RAB18, FAAA, FBRL, CALX, PRDX1, RL12, RL18, HEM6, NCPR, HMGCL, HSPA9, CAP1, TKT, INMT, RL28, ACSL1, ECI1, SEPT2, STAT1, PURA, PXMP2, TCPQ, H14, PLIN2, ACADM, MYO1B, STT3A, QOR, ALDH2, AL3A2, CAZA2, GSHR, RL6, RL29, RLA1, RL5, RL13, RL36, ANXA5, LMNA, CBR1, T23O, ROA1, HPPD, ODBA, DHB8, DHI1, SAHH, GLYC, K2C6A, VATA, ACADV, PA2G4, RAB7A, ACADL, RL9, DHB2, DHB4, GSHB, ADT2, THTR, PON1, KPYM, RIDA, CPT2, ST1A1, ST2A1, RL10A, ODB2, KPYR, MOT1, CNBP, IDHP, HMCS2, ABCD3, RAB8A, ADK, ATPK, CX6B1, CYB5, ATPB, CP2AC, FUS, EF1D, ACTN4, TM9S2, EF2, GGLO, IF5, ARPC4, EIF3E, PCBP1, ACTB, CDC42, IF4A1, RS20, UBE2N, ARP2, ARF3, ABCE1, RL26, RL27, RL37A, S61A1, ARF4, GABT, HNRPK, 1433G, RRAS2, RS7, PP1B, PRS8, RS8, RS15A, 1433E, RS14, RS23, RS18, RS29, RS11, RS13, RS4X, RL18A, RL23A, RS6, H4, RAB1A, RAN, RL23, RS15, RS24, RS25, RS26, RS28, RS30, GBB2, RL30, CYC, RL31, RS3, RL32, RL8, YBOX1, PROF1, RS27A, RAC1, HSP7C, TCTP, DNJA1, CH60, 1433Z, IF5A1, RS17, RS10, PHB1, RL22, RACK1, ACTS, 1433T, TBA4A, TBB4B, TBA1C, 1433F, IMB1, EBP, NFIX, PEBP1, HNRH2, ELAV1, NHRF1, NACAM, DHB5, TCPB, TCPD, TCPE, TCPZ, TCPG, RL36A, AP2M1, RL19, ISC2A, KHK, RS3A, PSME2, ANXA4, MYL11, RS5, GSH1, FMO3, CPT1A, FUMH, CATC, LYPA1, G3BP1, FMO5, TBB5, RLA2, PRDX5, RET4, A1AT4, HNRL2, SC23A, NDKB, TERA, UBA1, PLAK, ATPA, PPA5, CP2E1, PYC, ATP5I, CLUS, ANXA7, ACADS, LG3BP, HSDL2, ML12B, METK2, K22E, AGT2, RMD3, MCCB, SC31A, IQGA2, S27A5, DDX17, OPA3, GLSL, ACBD5, COPD, A1CF, ODO1, MYL6, HNRPD, PSB6, GCDH, IRGM1, SPB6, STIP1, CAPR1, VDAC2, VDAC3, VDAC1, COQ8A, PRDX2, ARGI1, PLSL, ABCD2, HCDH, GPAT1, GDIB, HPT, DDX5, HS105, LASP1, NPM, NNTM, PCBP2, DDX3X, SSRD, SPR1A, NDUA4, CYTB, VAT1, SBP2, EST3A, UD11, SPRE, BTF3, RGN, CH10, UD16, DHSO, CP2CT, GSTT1, GPDM, CLH1, F120A, IF4G1, ODBB, ABCF1, LPPRC, SRSF1, RS9, RS27, RL10, RL35, IF2A, RS27L, H2B1C, KAT3, 2AAA, ATPMK, MIC27, 3HAO, S22AI, SND1, OSTC, MTCH2, NDUAC, HNRPQ, TBB2A, LDHD, ACTN1, GVIN1, MOGS, FA98B, COEA1, FLNB, ACD11, BDH, EFTU, LPP, ROA3, ALAT2, AL8A1, S2512, ECHM, CHDH, IPO5, TM214, SRP68, ECHA, SYNC, RL24, ASPH, FLNA, DHPR, AOFB, SSDH, ACOT4, UD2A3, THIM, ERF1, CPSM, NAKD2, MIC60, PARP9, THIC, S2545, G6PE, SYEP, LONM, NT8F2, DPYD, AL4A1, PDLI5, COPA, CP2DQ, EIF3B, ACSL5, TXTP, UD3A2, GALM, COQ9, SDHA, HACD3, MATR3, NDUS8, ALAT1, THIL, EIF3L, HNRPL, EPIPL, SGPL1, AL1L1, BPHL, EIF3C, CMBL, QCR9, H2AJ, SDHL, HUTU, AK1CD, TKFC, GYS2, THIKB, CGL, DHB13, ABHEB, EST1D, EST3B, ACSF2, MYH9, VIGLN, PSMD2, AT1A1, HNRPU, S25A3, SEC63, OASL1, SFPQ, TRAM1, CK054, ACLY, ACSM1, NDUS1, RINI, RMXL1, ATPG, DDX1, MGST1, CBR4, GCSP, NDUS2, EIF3H, KMO, SYYC, EST1F, BAAT, GCKR, DCXR, METK1, NADC, FTCD, GLYAT, TM205, ALDOB, ATLA3, ARLY, RPN1, NDUV1, GRHPR, PCCA, UGPA, FPPS, FADS1, TADBP, ETFD, THIKA, TRFE, PDIA5, SYDC, C1TC, MARC2, LRC59, PDIA6, ATAD3, SFXN2, ROAA, S14L2, THTM, STML2, SFXN1, GORS2, ECHB, ARP3, NONO, PLST, AASS, GLO2, ACON, DPP3, DHRS1, 3HIDH, IF2B, DHRS4, SARDH, NDUAA, ETFA, RTCB, PARK7, NDUS5, DNJA3, PCCB, MCCA, PECR, NUDT7, RTN4, AAAD, RRBP1, GDIR1, NDUA5, ATP5L, RL17, AMPL, DECR, MTAP, QCR8, NDUA2, SDHB, NDUB4, SAR1B, PCYOX, NDUB5, NDUB9, TXD17, TRAP1, AT5F1, ACO13, PPP6, SC61B, MTNA, RER1, 1433B, CYB5B, MAGT1, NDUA6, RL14, M2OM, TMM33, UCRI, VKOR1, OCAD1, ARPC2, MARC1, PUR9, DDAH1, ROA0, KYNU, CENPV, RL11, TECR, SERB1, QCR1, C560, RL15, GLYM, AL1B1, CISY, RS19, ODPB, HNRPM, LMAN1, PGM1, SYRC, CY1, SYTC, GAL3A, CNDP2, TMEDA, FKB11, ERP44, HYEP, HACD2, ATPD, PLCC, NDUV2, GHC1, IDH3A, MSRA, GLGB, ACAD8, PRPS1, SAPC2, IPYR, RL37, SOX, U2AF1, RL4, EF1G, ATPO, IAH1, QCR2, HUTI, CSAD, AL7A1, CP27A, AP2B1, RPN2, PGAM1, COASY, ECHP, KCY, M2GD, NDUA9, NDUS7, RT11, 6PGD, SSRG, EIF3F, NDUA8, PUR6, GSTK1, NB5R3, ASPDH, MTL26, NDUBA, NDUS3, HOGA1, RMD1, ETFB, ATP5H, KEG1, TMT1B, LACTB, RENT1, DHB11, MMSA, DPYS, ERAP1, VPS35, MVP, SET, RT29, PYGL, IVD, TMOD3, NIT2, COPB, AK1A1, CMLO1, PLS1, RL38, PXMP4, GNA1, AL9A1, CD2AP, STA10, TRXR1, RHOA, PSA6, K1C17, F16P1, HACL1, GNMT, S2513, CLIC4, VKGC, DIC, EIF3I, COPG1, TBL2, ACOX1, ESTD, DEST, TEBP, MPU1, SQOR, PSA1, TPSN, RUVB2, KAD3, HAOX1, PDC6I, PROD, SYFB, SUCA, PREB, ECI2, ENTP5, DECR2, TAGL2, ORNT1, PACN2, EHD1, MAAI, IF2G, BPNT1, AIFM1, DX39B, SYVC, ILF3, STRAP, HNRPC, PX11A, LETM1, SUCB2, SUCB1, PSA7, HNRPF, MCAT
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Narayanan B, Zahra F, Reeves RA, Aggarwal A, O'Meally RN, Henry RK, Craven M, Jacobson A, Cole RN, Kohr MJ, Umapathi P, Zachara NE. Differential Detection of O-GlcNAcylated proteins in the heart using antibodies. Analytical biochemistry 2023 678 37507081
Abstract:
Thousands of mammalian intracellular proteins are dynamically modified by O-linked β-N-acetylglucosamine (O-GlcNAc). Global changes in O-GlcNAcylation have been associated with the development of cardiomyopathy, heart failure, hypertension, and neurodegenerative disease. Levels of O-GlcNAc in cells and tissues can be detected using numerous approaches; however, immunoblotting using GlcNAc-specific antibodies and lectins is commonplace. The goal of this study was to optimize the detection of O-GlcNAc in heart lysates by immunoblotting. Using a combination of tissue fractionation, immunoblotting, and galactosyltransferase labeling, as well as hearts from wild-type and O-GlcNAc transferase transgenic mice, we demonstrate that contractile proteins in the heart are differentially detected by two commercially available antibodies (CTD110.6 and RL2). As CTD110.6 displays poor reactivity toward contractile proteins, and as these proteins represent a major fraction of the heart proteome, a better assessment of cardiac O-GlcNAcylation is obtained in total tissue lysates with RL2. The data presented highlight tissue lysis approaches that should aid the assessment of the cardiac O-GlcNAcylation by immunoblotting.
O-GlcNAc proteins:
A0A023T778, A0A075B5P3, A0A075B5P4, A0A075B5P6, A0A075B5T2, A0A075B5T7, A0A087WP81, A0A087WPL5, A0A087WR50, A0A087WS16, A0A087WS46, A0A087WSC6, A0A0A0MQ79, A0A0A0MQA5, A0A0A0MQD2, A0A0A0MQF6, A0A0A0MQJ4, A0A0A0MQM0, A0A0A6YVU8, A0A0A6YW67, A0A0A6YW80, A0A0A6YWP6, A0A0A6YX26, A0A0A6YXF6, A0A0A6YXH3, A0A0A6YXV1, A0A0B4J1E7, A0A0B4J1H7, A0A0F6AIX5, A0A0G2JDI9, A0A0G2JDL9, A0A0G2JDR9, GBP6, A0A0G2JDW2, A0A0G2JE25, A0A0G2JEP0, A0A0G2JEX1, A0A0G2JEY6, A0A0G2JF52, A0A0G2JF85, A0A0G2JG74, A0A0G2JGJ1, A0A0G2JGS0, A0A0J9YU07, A0A0J9YU24, A0A0J9YUZ4, A0A0M3HEQ0, A0A0N4SV40, A0A0N4SV66, A0A0N4SVB1, A0A0N4SVB8, A0A0N4SVK8, A0A0N4SVL9, A0A0N4SW07, A0A0R4J023, A0A0R4J038, A0A0R4J050, A0A0R4J052, A0A0R4J093, A0A0R4J0H8, A0A0R4J0I1, A0A0R4J0K2, A0A0R4J0L5, A0A0R4J0L6, A0A0R4J0S3, A0A0R4J0T5, A0A0R4J0X5, A0A0R4J0Z1, A0A0R4J138, A0A0R4J196, A0A0R4J1E2, A0A0R4J1J3, A0A0R4J1Q6, A0A0R4J1R7, A0A0R4J1W0, A0A0R4J1W7, A0A0R4J260, A0A0R4J275, A0A0U1RPW2, A0A0U1RPY8, A0A140LHG8, A0A140LIU4, A0A140LIZ5, A0A140LJ98, A0A140LJB7, A0A171EBL2, A0A1B0GQU8, A0A1B0GR11, A0A1B0GRP7, A0A1B0GRV0, A0A1B0GRV3, A0A1B0GRW3, A0A1B0GS58, A0A1B0GS68, A0A1B0GS70, A0A1B0GS91, A0A1B0GSG5, A0A1B0GSK8, A0A1B0GSR9, A0A1B0GX27, A0A1C7CYV0, A0A1C7ZN10, A0A1D5RM79, A0A1L1SQ51, A0A1L1SQA8, A0A1L1SS27, A0A1L1SST0, A0A1L1STE6, A0A1L1SV25, A0A1L1SV73, A0A1W2P6E6, A0A1W2P6P1, A0A1W2P768, A0A1W2P7A1, A0A1W2P812, A0A1Y7VJY8, A0A1Y7VKT9, A0A1Y7VKY1, A0A1Y7VLP0, A0A286YCI8, A0A286YCS6, A0A286YD12, A0A286YDA2, A0A2I3BPW0, A0A2I3BQE3, A0A2I3BQF4, A0A2I3BRL8, A0A2K6EDJ7, A0A2R8VHF9, A0A2R8VHX0, A0A338P6D9, A0A338P6G0, A0A338P6N4, A0A338P703, A0A338P731, A0A338P786, A0A338P7D7, A0A338P7F1, A0A338P7G4, A0A3B2W824, A0A3B2WB97, A0A3B2WBC6, A0A3B2WCN9, A0A3Q4EBV4, A0A3Q4EG54, A0A3Q4EH93, A0A3Q4EI56, A0A494B908, A0A494B923, A0A494B955, A0A494B985, A0A494B9D8, A0A494B9P3, A0A494B9W3, A0A494B9X1, A0A494B9Y4, A0A494BA51, A0A494BAJ6, A0A494BB38, A0A494BBC1, A0A494BBG8, A0A571BEC9, A0A571BEG4, A0A571BG59, A0A571BGD8, A0A5F8MPB9, A0A5F8MPD6, A0A5F8MPK9, A0A5F8MPM4, A0A5F8MPN8, A0A5F8MPW1, A0A5F8MPY2, A0A5K1VVQ9, A0A668KL51, A0A668KLD3, A0A6I8MWZ8, A0A6I8MX27, A1BN54, A2A513, A2A5F5, A2A6F8, A2A6Q8, A2A7A7, A2A813, A2A848, TM201, A2A997, A2A9Q2, OBSCN, A2AAW9, A2AE89, A2AEX6, A2AFQ0, A2AFQ2, A2AGJ9, A2AI69, A2AI87, NDUF6, A2AIM4, A2AIW9, A2AK42, A2AKD7, A2AKU9, A2AKV9, A2AL12, A2ALV7, CAVN4, A2AMW0, UBR4, A2AN84, A2APD7, A2AQN4, MYH7B, A2AQR0, A2AQY8, A2AS98, TITIN, A2AT02, A2AU61, A2AUD5, RBGP1, A2BDW0, A2BH06, A2BI12, A2CEK3, A2CES4, A2CG35, A3KFU5, A3KGU5, ARMT1, A6X925, A8DUK4, A8JYK8, CISD3, B1AR28, B1AR93, B1ARA3, B1ASE2, B1ASZ3, B1AT10, B1AU25, B1AUX2, B1AV14, B1AXW5, B1AZ14, B1B0C7, B2C3G8, GNAI1, B2RXT3, B2RY24, B7FAU9, B7ZCI2, B8JJI4, B8JJM5, B8JK32, B9EIZ7, D3YTL5, D3YU39, D3YUG3, D3YUK5, D3YUM1, D3YUP1, D3YVF4, D3YVI6, D3YVV9, D3YW19, D3YWA4, D3YX99, D3YXT0, D3YY36, D3YYE1, D3YYG9, D3YYS6, D3YZ06, D3YZ71, D3Z041, D3Z067, D3Z0G0, D3Z0X5, D3Z0Y2, D3Z1B5, D3Z1V4, D3Z263, D3Z2B3, D3Z2Y8, D3Z4A4, D3Z5K6, D3Z5W3, D3Z627, D3Z636, D3Z6F5, D3Z780, D3Z7A7, D3Z7D5, D3Z7K3, D3Z7U0, D3Z7V3, D5MCW4, D6REH1, D6RFU2, D6RFU9, D6RGM3, D6RH37, E0CXB1, E0CXH2, E0CXN7, E0CXS3, E0CY23, E0CZ90, E0CZE0, E9PUD2, E9PUE8, E9PUM3, E9PUU2, E9PUY9, E9PV12, FIBA, E9PV63, E9PV66, E9PVP0, E9PVU0, E9PWE8, E9PX89, E9PYF1, E9PYI8, E9PZ00, E9PZ88, E9PZC4, E9PZD8, E9PZF0, E9PZI9, E9PZP8, E9Q133, E9Q1J7, E9Q1T9, E9Q1V0, E9Q264, RYR2, E9Q4T8, ACACB, DESP, E9Q5B5, E9Q5I9, E9Q616, E9Q6A9, E9Q6C2, E9Q6W2, E9Q7A5, E9Q800, E9Q933, E9Q9C0, E9Q9T8, E9QJV4, E9QKY4, E9QL13, E9QN70, E9QPD7, E9QPX3, F6QPR1, F6QYE1, F6QYF8, F6RR81, F6VVE6, F6VVY4, F6VY18, F6XI62, F6YCA7, F6ZV59, F7A3N3, F7DBQ0, SKI3, F8VPN4, F8VQJ3, F8WGL3, F8WHU8, F8WIB1, F8WIE5, F8WIT2, F8WIV2, F8WIV5, F8WJ05, G3UVU2, G3UVV4, G3UW30, G3UW85, G3UWN9, G3UX26, G3UXI6, G3UXX3, G3UYR8, G3UZ33, G3UZ48, G3X8R0, G3X8R1, G3X8T3, G3X8T9, QNG1, G3X956, G3X975, G3X977, G3X983, G3X9Q1, G3X9U9, G3XA48, G5DDB7, G5E823, G5E839, G5E883, G5E8R7, H3BIY9, H3BJI5, H3BJP9, H3BJQ7, H3BKH4, H3BKH6, H3BL49, H3BLH2, H7BWZ3, H7BX01, H7BX88, H7BX99, I7HLV2, J3QMG3, J3QPW1, J3QPZ9, J3QQ13, K3W4R2, K3W4S6, K4DI63, L7N451, M0QWU8, CAN2, DPYL2, DLDH, GSTO1, RL21, AMACR, SCRB2, PSMD4, ECH1, ANXA3, C1QBP, TIM44, AL1A7, CAVN1, SYUA, IMPCT, DSG2, NIPS2, AT2A2, PGAM2, PDLI1, AOC3, FHL2, PSA3, DHB12, WDR1, MTX2, ROA2, COMT, BIRC6, IDHC, GNPI1, KBL, AFAM, C1QR1, LANC1, ADH1, COX1, CAH2, CO3, CO4B, HBE, NU1M, NU4M, NU5M, FABP4, MYG, ALDOA, KAPCA, AATC, AATM, TBA1B, CO5, G6PI, MAOX, TTHY, KCRM, ANXA2, ALBU, K2C4, HS90A, CBR2, ENPL, MDHM, PDIA1, NUCL, PGK1, FRIH, SODM, H2AZ, IFI5B, ANXA1, EF1A1, NID1, CATB, THIO, RRAS, H2B1M, H10, LIPL, FABPH, HS90B, DMD, K2C8, ITPR1, TCPA, UCP1, PFKAL, RL7A, GELS, CAH1, GPDA, AT1B1, RS16, RSSA, CALR, HA2B, PSMD3, LMNB1, GLNA, PMGE, CAH3, LEG1, LEG3, CN37, DDX3L, AMPE, ENOA, SBP1, TPIS, CATD, FAS, SERPH, COX41, BIP, PRDX3, VIME, PLMN, ENOB, VTDB, TGM2, AP1G1, EIF3A, CXA1, CRYAB, EST1C, CATA, PPIB, GSTA4, LKHA4, AL1A1, RS2, LYN, TLN1, EZRI, MOES, CTNA1, PTMA, DHE3, PSMD7, FKB1A, PDIA3, ACOHC, ADHX, PGS1, PGS2, NP1L1, ATX10, MUG1, OAT, FKBP4, HMGB2, DESM, MP2K1, SCP2, LA, ANT3, SYWC, MIF, RAB21, HSPB7, TSP1, ODPA, CALX, RL12, PPM1B, TAGL, HMGCL, HSPA9, CAP1, TKT, VP26A, INMT, ECI1, H14, ALDR, ALD2, COF2, ACADM, NSF, VPS4B, PRS7, RB11B, NEDD4, PA24A, ALDH2, GSHR, MK14, PFKAM, RL6, ANXA5, ABCD1, LMNA, CBR1, COX8B, TNNI3, ADT1, HEP2, ROA1, INPP, MCM4, CAV1, SAHH, FMO1, GDIA, CSRP3, VATA, ACADL, DHB4, MLRV, HDGF, ADT2, THTR, PON1, KPYM, NDUS6, CPT2, ODB2, IDHP, RD23A, PUR8, DDX6, ADK, ACYP2, AP4A, CX6B1, UBP5, ATPB, CD38, ERP29, EF2, TPM1, B2L13, RUVB1, EIF3E, PCBP1, NPL4, ACTB, CDC42, IF4A1, UBC12, UBE2N, ARP2, ARF3, RL27, 1433G, RRAS2, RS7, PP1B, RS8, RS15A, 1433E, RS23, SMD3, EF1A2, RS4X, AP2S1, RS6, H4, RAN, RS24, RS26, CYC, RL32, FBX40, PROF1, LIS1, HSP7C, TCTP, CH60, IF4E, 1433Z, RS17, PHB1, ACTC, RACK1, 1433T, TBB4B, 1433F, USP9X, IDHG1, NACAM, F16P2, DCUP, PYRG1, TCPB, TCPE, TCPZ, ARF5, AP2M1, RL19, ISC2A, CSRP1, NRP1, RS3A, CPT1A, WBP2, FUMH, LAMA4, TBB5, G6PD1, APOA1, A1AT5, APOH, TERA, UBA1, PLAK, MYH6, KCRB, CO6A1, FABP5, ATP5I, CBG, MPRI, ACADS, AMBP, CD36, Q14BI5, ACSS3, A1BG, TRI72, Q20BD0, NLR1A, HSDL2, OSBP1, CUL4A, Q3TG45, Q3TGM7, GUAA, TM38A, Q3TXN1, PSMD1, SC31B, SYRM, DDB1, Q3U2G2, Q3U422, Q3U816, Q3U8Y1, Q3UER8, Q3UF75, TM10C, Q3UGX2, HAP28, MYLK3, Q3UJQ9, GPD1L, PP1R7, HDGR2, SC31A, THEM4, Q3UZJ4, ST1D1, Q3V117, HSPB6, D39U1, Q5SQ27, Q5SQB0, Q5SUS9, Q5SWN2, ACACA, MYH4, MYH1, COPD, A1AG1, ODO1, LAMA2, STIP1, VDAC1, COQ8A, ADIPO, 2A5G, LAMA5, HARS1, HCDH, GDIB, HS105, SERA, PZP, MIME, POSTN, PON3, DAG1, MYOM1, SPTB2, TX261, TIF1B, TSN, TFR1, NDUA4, CYTB, CAVN2, BTF3, CH10, ADH7, CP4B1, TOP2B, TPP2, H2A2B, H2A2C, NQO1, VINC, PUR2, CTNA3, CLH1, RFTN1, NOMO1, K2C73, 2ABA, U520, XPO1, KCRS, Q6P8N8, OXSR1, LPPRC, UBR2, CAND1, CAND2, MLEC, RS9, IF2A, KAT3, 2AAA, ATPMK, Q7TNL5, SRCA, ELP1, SESD1, FLNB, PANK4, IREB2, EFTU, MIRO1, SAM50, S2540, SYAC, SYNM, F210A, S2512, F13A, EHD2, ECHM, SYIM, AHSA1, RCC2, IPO5, ODPX, MAON, ODP2, ECHA, PPA6, Q8BRB6, AAPK2, Q8BTS3, CSN7B, PPME1, NUDT9, AOFB, SSDH, THIM, KANK2, VP13C, COMD2, PGM5, NHLC2, GPCP1, ASGL1, LCAP, EXOG, THOP1, Q8C483, EMC1, Q8C845, Q8C8G3, ANK2, VWA8, ARK72, SYEP, LONM, UN45B, BICRL, PGP, FBX4, AL4A1, PDLI5, DI3L2, PYGB, FERM2, COPA, PAK2, HMCS1, ACAD9, MIRO2, AFG32, EIF3B, ACSL5, FIBB, TACO1, PDXK, COQ9, SDHA, FMO2, LZIC, HIBCH, THIL, ERF3A, SUOX, FAHD1, S2542, EIF3C, CMBL, COQ6, Q8R2P8, FABD, GBRL1, CLYBL, TMC2, UBP15, RMC1, MAVS, EST1D, ACSF2, CK068, SYLM, MYH9, PPCS, HNRL1, AT1A1, LMCD1, HNRPU, S25A3, RBM39, FLNC, ETFR1, Q91VB8, NDUS1, HNMT, DDX1, CBR4, EIF3H, CISD1, HEMO, VPS36, RHG35, FAKD4, L2HDH, RPN1, TWF1, MYH7, PCCA, UGPA, SMCA5, HNRLL, ETFD, TRFE, RHEB, MACD1, SYDC, MPI, RT02, CPT1B, DCMC, SMRD2, EIF3M, ECHB, Q99JZ4, RRAGC, VMA5A, ACON, DCTN2, NAMPT, PPIF, DHRS1, 3HIDH, DHRS4, MAT2B, NDUAA, ETFA, DDAH2, RTCB, GRPE1, NDUS5, DNJA3, ASPN, MCCA, PPR3A, RM09, ACS2L, NUDT7, RTN4, GDIR1, PRP8, NDUA5, COX6C, ATP5L, LGUL, AMPL, MYL9, NDUC2, DECR, MTAP, PKP2, NDUA2, SDHB, NDUB4, TM223, COTL1, NDUB9, TXD17, TRAP1, AT5F1, ACO13, 1433B, DPH2, M2OM, CHSP1, NAR4, TPPP3, MIC19, SMC1A, NUD17, PUR9, SNX2, CYGB, ROA0, COQ5, MITOS, MPPB, CYBP, BIEA, QCR1, HS12B, RL15, GLYM, EFTS, AL1B1, CISY, 5NT3A, ODPB, SYRC, EXOS7, CY1, SYTC, HINT2, ILEUA, GAL3A, HHATL, RM53, ODO2, OXSM, CUL2, EFHD1, PLCC, NDUV2, FUND2, F162A, ECHD3, IPYR, QCR7, ITPA, RL4, EF1G, T126A, PHP14, MTU1, ATPO, QCR2, PLIN3, LMAN2, PGAM1, ACDSB, OCTC, RT15, 6PGD, NDUA8, PUR6, GSTK1, MECR, NDUBA, NDUS3, CRIP2, RMD1, ETFB, LACTB, DHB11, MMSA, ERAP1, VPS35, RM46, EHD4, PARVB, M3K20, PSMG2, PYGL, IVD, DYHC1, NQO2, ACTN2, COPB, AK1A1, DDX21, RL38, SH3L1, PROF2, TBA8, PRELP, IQGA1, HYOU1, LDB3, GLTP, PALS2, PPCE, MLRA, DRG2, PLEC, S2513, TOM40, CLIC4, DNJA2, ACOT2, AAKB1, DEST, ACOT9, KAD1, PSA4, PSB3, PSB2, SAE1, BMP10, MYO1C, KAD2, KAD3, CUL1, PDC6I, COR1C, SUCA, KAD4, CATZ, ABEC2, CBPQ, EHD1, S12A7, GRK1, MTNB, GBP2, SYUG, TWF2, NFS1, NDUA7, CLIC1, STK39, MTMR9, SUCB2, SUCB1, PCKGC, PSD10, MCAT, S4R1F2, S4R1N1, S4R242
Species: Mus musculus
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Shu XE, Mao Y, Jia L, Qian SB. Dynamic eIF3a O-GlcNAcylation controls translation reinitiation during nutrient stress. Nature chemical biology 2022 18(2) 34887587
Abstract:
In eukaryotic cells, many messenger RNAs (mRNAs) possess upstream open reading frames (uORFs) in addition to the main coding region. After uORF translation, the ribosome could either recycle at the stop codon or resume scanning for downstream start codons in a process known as reinitiation. Accumulating evidence suggests that some initiation factors, including eukaryotic initiation factor 3 (eIF3), linger on the early elongating ribosome, forming an eIF3-80S complex. Very little is known about how eIF3 is carried along with the 80S during elongation and whether the eIF3-80S association is subject to regulation. Here, we report that eIF3a undergoes dynamic O-linked N-acetylglucosamine (O-GlcNAc) modification in response to nutrient starvation. Stress-induced de-O-GlcNAcylation promotes eIF3 retention on the elongating ribosome and facilitates activating transcription factor 4 (ATF4) reinitiation. Eliminating the modification site from eIF3a via CRISPR genome editing induces ATF4 reinitiation even under the nutrient-rich condition. Our findings illustrate a mechanism in balancing ribosome recycling and reinitiation, thereby linking the nutrient stress response and translational reprogramming.
O-GlcNAc proteins:
A0A075B5P4, A0A087WNV1, A0A087WPT1, A0A087WQF8, A0A087WS88, A0A0A0MQM6, A0A0A6YVP0, A0A0A6YY72, A0A0B4J1E2, A0A0G2JFJ6, A0A0G2JFN8, A0A0G2JFY0, A0A0G2JG10, A0A0G2JG59, A0A0G2JG60, A0A0G2JG65, A0A0G2JGL8, A0A0H2UH17, A0A0J9YTU3, A0A0J9YUT8, A0A0J9YUY8, A0A0N4SV00, A0A0N4SV32, A0A0N4SW94, A0A0N5E9G7, A0A0R4J060, A0A0R4J169, A0A0R4J1E3, A0A0R4J1Y4, A0A0R4J260, A1BN54, A1L341, A1L3S7, A2A485, A2A513, A2A5N3, A2A8V8, A2AGK3, LZTS3, A2AM70, A2AMY5, A2APQ6, A2AS44, A2AVJ7, A2AWT6, A2BGG7, KANL3, K1C28, A6X8Z3, A8Y5K6, B0V2N8, B1AU25, TBD2A, THOC2, TPC11, PLXB2, RBM25, B7FAU9, B7ZWM8, B8JK33, B9EHJ3, D3YTT9, D3YUW7, D3YV30, D3YV43, D3YVH4, D3YX49, D3YX64, D3YX85, SAFB1, D3YYT0, D3YZ62, D3YZL1, D3YZT4, D3Z1X3, D3Z2H7, D3Z3E8, D3Z4B0, CCD78, D3Z6N3, CILP2, D6RCG1, E0CY31, E0CYH0, E9PUA5, E9PUJ2, E9PUX0, GCN1, E9PVC6, E9PVG8, KI67, E9PW24, E9PYF4, SET1A, E9PYI8, E9PZW0, E9Q066, E9Q0F0, E9Q0M9, E9Q0U7, E9Q0Y4, E9Q133, E9Q166, E9Q175, E9Q1Z0, E9Q2X6, NU153, NOLC1, E9Q5F6, E9Q616, MYO1E, E9Q6A9, E9Q6M7, E9Q6T8, E9Q8F0, E9Q9C7, E9Q9H2, E9QA74, E9QAT0, E9QKG6, E9QLM4, E9QN31, E9QNH6, E9QNN1, E9QPE7, E9QPI5, F2Z480, F6S6G6, F6T0G2, F6TFN2, F6TW20, F6WTC8, F6XWD4, F6YRW4, F6YUI5, F7B296, F7C312, FARP1, F8VPX1, F8VQ29, F8WHR6, G3UWP5, G3UWZ0, G3UX48, G3UYD0, G3UYG6, G3UYW3, G3UYZ0, G3X8P9, G3X8Q0, G3X956, SI1L3, G5E839, G5E846, G5E866, G5E879, G5E8C3, G5E8J8, G5E8N3, G5E8T6, H3BJU7, H3BKF6, H3BKM0, H3BKN0, H3BKT5, H3BL49, J3QMC5, J3QNW0, CAN2, ATN1, SRSF5, IMA3, PININ, EIF3D, ATX2, E41L2, UGDH, SP3, IF2B1, ZFR, HIPK1, IGKC, IGHG1, HBA, K2C1, TBA1B, ALBU, HS90A, NUCL, ATX1L, EF1A1, H2B1F, CO1A1, HS90B, TCPA, GELS, HS71L, AP2A2, K1C19, BIP, VIME, MFGM, EIF3A, MCM3, MOES, CTNA1, U2AF2, PDIA3, GRN, PABP1, FKBP4, KIF4, TSP1, HSPA9, TKT, BCL6, FOXK1, H14, NEDD4, LMNA, MCM5, K2C6A, IMA1, KPYM, DDX6, ACTN4, EF2, ASXL1, ACTB, ABCE1, RRAS2, H4, HSP7C, CH60, TBA1A, TBB4B, H31, IMB1, TCPB, TCPE, TCPZ, WNK1, H32, MPRIP, G3BP1, TBB5, HNRL2, TOP2A, UBA1, PLAK, IF2P, EPS8, LRIQ1, ZCH18, LMTD2, FA83H, CDCA2, CYTSA, SPP2B, Q3TJ56, K22E, FUBP2, Q3U6F1, Q3U8S1, FOXK2, PUF60, Q3UID0, Q3UJB0, Q3UNN4, SFSWA, K22O, CFA74, Q3UYN2, LRRF1, ESF1, KIF22, Q3V3Y9, Q45VK5, Q4FJZ2, Q4KL80, Q4TU83, PDS5B, DDX17, LRC47, Q52KR6, TR150, NEXMI, JCAD, NUFP2, PRSR1, RBM27, PHF12, UTP18, LC7L3, Q5SUT0, TSR1, MYO1D, Q5U4C5, SIN3A, SRC8, MYL6, STIP1, CAPR1, IMA5, LAP2A, HCFC1, K1C15, SMRD1, FXR1, DDX5, HS71A, SERA, KINH, MYH10, SIN3B, DDX3X, TIF1B, NUP62, K1C12, SQSTM, TOP2B, Q68EM3, CLH1, CDC5L, F120A, CNDG2, NOP58, SCAF8, K1C42, K2C1B, SR140, ZC11A, ABCF1, RRP12, Q6P5B5, UGGG1, XPO1, KIF11, FHOD1, LPPRC, NUP98, Q6PGF5, NEB2, DAPLE, UBE2O, LARP1, NU188, WDR43, 2AAA, Q792Z1, PICAL, UHRF2, MBB1A, Q7TQE2, NU214, WNK4, KIRR1, UBP2L, FLNB, WNK3, Q80ZX0, LPP, ACTBL, P4HTM, MYPT2, HTSF1, IF4B, NU107, WDR3, NOC4L, CE128, NUP93, SUN2, RCC2, EMSY, SYLC, CKAP4, SRRM2, NUP54, PWP2, SYIC, RL1D1, MAP1S, TTC34, SI1L1, RBM14, Q8C872, DIDO1, ATAD2, NUP88, Q8CFQ9, SMC2, UACA, SYEP, TCRG1, OGT1, CCAR1, SLTM, BICRL, P66A, COPA, HMCS1, Q8JZN2, EIF3B, BCLF1, PHLB2, NAT10, ANLN, SDHA, LS14A, MATR3, DDX18, PO121, EIF3L, HNRPL, NU133, EIF3C, ZC3HA, TDIF2, NUP58, CD109, LUZP1, UTP6, MYH9, UHRF1, VIGLN, CCAR2, CUL7, K2C79, Q8VGW3, DHX36, SFPQ, ACLY, DDX1, U3IP2, SYYC, RPN1, YTHD2, BMP2K, SNX18, SMCA5, Q921K2, SF3B3, DDX27, Q921S6, SMTN, PP6R3, K2C5, DEN2B, NXF1, NONO, ACON, NMD3, RTCB, CT2NL, HSP7E, NU155, IF2B3, Q9CPN9, SMC1A, SMC3, CXXC1, GARS, CEP72, SC23B, Q9D6D0, NOP56, FIP1, SPB1, MYPT1, NVL, EIF3F, RAI14, CPSF1, PESC, VPS35, LIMA1, DKC1, PALLD, NUP50, DDX21, FLII, YBOX3, IQGA1, Q9QUK9, CAF1A, K1C17, MAGD1, MTA2, PR40A, MYO1C, COR1C, E41L3, EHD1, WDR46, ZO2, NU160, ADNP, SYVC, Q9Z1R9, BAZ1B, K1C16, SNUT1, S4R2A9, S4R2J9, V9GX87
Species: Mus musculus
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Massman LJ, Pereckas M, Zwagerman NT, Olivier-Van Stichelen S. O-GlcNAcylation Is Essential for Rapid Pomc Expression and Cell Proliferation in Corticotropic Tumor Cells. Endocrinology 2021 162(12) 34418053
Abstract:
Pituitary adenomas have a staggering 16.7% lifetime prevalence and can be devastating in many patients because of profound endocrine and neurologic dysfunction. To date, no clear genomic or epigenomic markers correlate with their onset or severity. Herein, we investigate the impact of the O-GlcNAc posttranslational modification in their etiology. Found in more than 7000 human proteins to date, O-GlcNAcylation dynamically regulates proteins in critical signaling pathways, and its deregulation is involved in cancer progression and endocrine diseases such as diabetes. In this study, we demonstrated that O-GlcNAc enzymes were upregulated, particularly in aggressive adrenocorticotropin (ACTH)-secreting tumors, suggesting a role for O-GlcNAcylation in pituitary adenoma etiology. In addition to the demonstration that O-GlcNAcylation was essential for their proliferation, we showed that the endocrine function of pituitary adenoma is also dependent on O-GlcNAcylation. In corticotropic tumors, hypersecretion of the proopiomelanocortin (POMC)-derived hormone ACTH leads to Cushing disease, materialized by severe endocrine disruption and increased mortality. We demonstrated that Pomc messenger RNA is stabilized in an O-GlcNAc-dependent manner in response to corticotrophin-releasing hormone (CRH). By affecting Pomc mRNA splicing and stability, O-GlcNAcylation contributes to this new mechanism of fast hormonal response in corticotropes. Thus, this study stresses the essential role of O-GlcNAcylation in ACTH-secreting adenomas' pathophysiology, including cellular proliferation and hypersecretion.
O-GlcNAc proteins:
GPTC8, ITB4, PTPRF, VIR, HMCN2, SETX, RTF1, MYH7B, FSIP2, ARGAL, CO6A5, MMRN2, STOX1, PLXB2, AGRG4, F25A2, LOXH1, HMCN1, TM233, PIEZ1, TOPZ1, CE350, M3K19, RYR2, ACACB, RN213, CF251, ARHG5, BICRA, FOXM1, DLDH, PEX5, WRN, CELR1, PROM1, STK10, MYPC3, DTNB, IKKB, ACTN3, ALDOC, RPB1, LMNB1, MAP1B, HVM57, PAI1, MCM3, MIS, RGRF1, MSRE, CTND1, RB22A, ZO1, QOR, ANXA5, MSH6, EVC, KCNN2, DEPD5, NOE3, TBB4B, ROCK1, GSH1, G3BP1, ATS1, TBB5, NF1, PGBM, IF2P, FA8, GDF3, KCMA1, ZCH18, TANC1, NSUN7, SHRM4, FAT4, IGFN1, HMHA1, FA98A, SCRN3, CH048, K22E, SHLD2, BIG3, SDK1, BAHC1, SLMAP, TBCD9, RIMB3, DYH12, ITAD, CKAP2, IGS10, A3LT2, ITA1, HERC2, XIRP2, TR150, IQEC2, LRC8B, FAT2, S39AC, VP13A, MTUS1, GSTCD, TENS3, ACACA, UTP20, KLRA4, PAPOA, STAR3, EWS, KTN1, GRID1, DDX5, CP131, SEM3B, TLL1, MINT, CCPG1, BTF3, TPP2, RBL1, COBA2, TASOR, PDS5A, CE290, NAL14, A2MG, ZZZ3, FREM2, CPSF6, RPRD2, HEAT6, P4R3A, FIL1L, SNX6, GAPD1, PTN23, TRI37, MON1A, MSL1, SARM1, CENPE, DAPLE, TIAM2, UBE2O, KDM3B, SYNE1, CMYA5, FHOD3, TBB2A, MYCB2, SGO2, MCAF1, STAR9, CAPS1, PHF8, CUL9, CLAP1, ST18, SGSM2, TAF1, M18BP, UBP2L, FLNB, OFD1, PTHB1, PDK1, TMCO3, NRDC, MARF1, TM87B, UNC80, TCAF1, KTU, UBP43, CAPS2, ZN609, DOCK2, RHG24, NAKD2, LENG8, UFL1, CD158, CLASR, SSPO, SLTM, NAV1, FBX4, RFWD3, MICA3, STAU2, NEIL3, CCD14, DDX18, UBP45, AL1L1, CCD80, TF2H3, FYCO1, HNRPU, DYH5, DHX36, AGRV1, FLNC, REST, NDUS1, CREL1, CELR3, DYST, BRWD1, GOGA2, PDIA6, TM1L1, RT4I1, CSTN3, PRP19, TARA, UBP16, NOG2, MYO7B, BCDO2, RRBP1, ZN318, DHX30, MITOS, RBM33, NARF, KLH35, ACSL3, SYRC, C16L2, NBEA, TBB3, XPO4, RBCC1, LRP1B, CAC1F, PRG4, BIR1B, SRCN1, SHRM3, ING1, MACF1, ACL7A, SMK2B, H17B6, RPGR, RHG07, MAST1, ADA11, TIM, PFKAP, IRAG1, DEMA, P2R3D, SETBP, NEK4, PLD1
Species: Mus musculus
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Lee BE, Kim HY, Kim HJ, Jeong H, Kim BG, Lee HE, Lee J, Kim HB, Lee SE, Yang YR, Yi EC, Hanover JA, Myung K, Suh PG, Kwon T, Kim JI. O-GlcNAcylation regulates dopamine neuron function, survival and degeneration in Parkinson disease. Brain : a journal of neurology 2020 143(12) 33300544
Abstract:
The dopamine system in the midbrain is essential for volitional movement, action selection, and reward-related learning. Despite its versatile roles, it contains only a small set of neurons in the brainstem. These dopamine neurons are especially susceptible to Parkinson's disease and prematurely degenerate in the course of disease progression, while the discovery of new therapeutic interventions has been disappointingly unsuccessful. Here, we show that O-GlcNAcylation, an essential post-translational modification in various types of cells, is critical for the physiological function and survival of dopamine neurons. Bidirectional modulation of O-GlcNAcylation importantly regulates dopamine neurons at the molecular, synaptic, cellular, and behavioural levels. Remarkably, genetic and pharmacological upregulation of O-GlcNAcylation mitigates neurodegeneration, synaptic impairments, and motor deficits in an animal model of Parkinson's disease. These findings provide insights into the functional importance of O-GlcNAcylation in the dopamine system, which may be utilized to protect dopamine neurons against Parkinson's disease pathology.
O-GlcNAc proteins:
BIG2, F1712, VIR, AJM1, RPGP1, UBR4, SCN1A, AGRIN, KALRN, STPG3, FXL16, TT23L, PTPRS, GRIK3, SCN2A, DLGP4, OSBL8, PTPRZ, PGBD5, GLSK, GCN1, CE350, PI4KA, RYR2, AGRF2, UBE4A, NRX2A, FRY, SYGP1, OTOGL, AT2B1, ANK3, CA2D1, DPYL2, STXB1, DCTN1, U5S1, GFRA2, GALT1, SEM4D, KIF3C, PLCA, PHB2, NCAM2, GRAK, PURB, IMA3, IMA7, PLD3, FOLH1, FKBP8, STX1A, PSDE, VIAAT, AP1B1, C1QBP, SYT3, HNRH1, SATT, CTND2, SDC4, AP3D1, RGS9, RGS7, CSK22, OX2G, AAKG1, CRYM, PROM1, CNTP1, ENTP2, BCKD, SNG1, NIPS1, NIPS2, SEPT7, AT2A2, PI51C, PI42A, ITB5, GPX4, NPTX2, GNAZ, WDR1, S4A4, MTX2, CNTFR, ZFR, CSN3, HCN2, HCN1, CTBP1, BSN, MPP3, NOE1, CBPD, LGMN, COR1A, CYB, COX1, COX2, COX3, HPRT, ATP6, THY1, H3C, LAMC1, NU1M, NU2M, NU4M, NU5M, ATP8, GFAP, MBP, PRIO, ALDOA, KAPCA, AATM, TBA1B, TBA3, KIT, LDHA, G6PI, MDR1B, ENPP1, HS90A, ENPL, KCC4, NFL, NFM, RASN, PGK2, ITB1, PPBT, NUCL, PGK1, ACE, LRC4B, UBB, UBC, EF1A1, IF4A2, GSTM1, 4F2, H10, LAMP1, HS90B, L1CAM, ITA5, KCC2A, ITB2, ITPR1, TCPA, PFKAL, CNTN1, NCAM1, AT1B1, C1QB, RS16, RL7, AT1B2, PSMD3, MAP1B, GLNA, CADH2, INSR, NTRK2, KCNC1, SPTB1, H12, KPCE, LDHB, CN37, DDX3L, KCNA1, KCNA3, AMPE, ASSY, SPTN1, G3P, LAMP2, ENOA, AP2A1, AP2A2, HXK1, GTR1, PTPRA, COF1, GNAO, FAS, LAMA1, NFH, COX41, BIP, HEXB, VIME, MTAP2, MAG, GNA11, GNAQ, MDR1A, ACES, GBRG2, AP1G1, GBRD, EIF3A, CXA1, GRIA1, GRIA2, TY3H, RS2, GBRA2, RL3, BRAF, KCC2B, NP1L1, NCKP1, SNAB, KIF3A, PABP1, GBB4, KCRU, GNA14, KAP3, SC6A1, S6A11, MP2K1, GTR3, LA, RASK, SYWC, KIF1A, HYES, RAB3D, RAB5C, RAB6A, RAB21, NMDZ1, ODPA, RET, FBRL, KCNJ2, CD81, GPM6A, GPM6B, GNL1, DYN1, DYN2, GRIK2, CAP1, ABCA2, PURA, HD, EAA2, H14, H15, H13, ITAV, SYT1, NSF, RB11B, AINX, MYO1B, NEDD4, ALDH2, GRM8, CAZA2, CAPZB, MP2K4, PFKAM, RL6, RL29, RL5, GLRB, DCE1, DCE2, CBR1, GSTM5, ADT1, INPP, CDK5, SAHH, GDIA, VATA, VATE1, GBRB1, RAB7A, ACADL, VA0D1, ADT2, EAA3, KCNJ4, KPYM, RAB2A, PRS6B, PTN5, NCAN, ABCD3, RAB8A, ATPK, ATP5E, UBP5, ATPB, CTBP2, EAA1, WFS1, FUS, NICA, ACTN4, ASM3B, EF2, OPA1, DOCK4, IRPL1, ARPC4, MYPR, PLPP, ACTB, MDGA2, NEUG, RAC3, IF4A1, MEGF8, RAB5B, RAB10, RAB8B, ARP2, ACTZ, CSN2, ARF3, ARL1, CAH10, RAP2B, STX1B, RAB6B, RL27, ARF4, GABT, 1433G, RS7, PP1A, RS8, SMD1, KCAB2, ABI2, RB11A, EF1A2, RS4X, PP2AB, RL18A, ACTA, AP2S1, RL23A, VISL1, H4, GBRA1, VATB2, RAB1A, RAB3C, RAN, RAP1A, RS24, GBB1, GBB2, RS3, RL8, RS27A, RL40, RAC1, RAB3A, HSP7C, CH60, VAMP2, NOE3, GBRB3, VATL, PP1G, 1433Z, GBRB2, KCNA2, KCAB1, CRNL1, DYL1, ACTG, ACTH, KPCG, PP2BA, PP2AA, PHB1, CSK2B, ACTC, RACK1, ACTS, KAPCB, TBA4A, TBA1A, TBB4B, KPCB, H31, IMB1, PLXA1, PLXA2, PLXA3, DCC, ITPR3, NCHL1, HNRH2, ELAV1, USP9X, IDHG1, LYAG, AT8A1, TCPH, TCPB, TCPD, TCPE, TCPZ, TCPG, TNIK, WNK1, RL36A, ARF1, ARF5, AP2M1, H32, H33, ADCY5, NPTN, RS3A, AT1B3, DPYL1, ZNT3, GRM1, SHPS1, NEO1, M4K4, C1QA, TBB5, PDE4D, PDE1B, NMDE2, SC23A, TERA, C1QC, CTNB1, PLAK, EPHA4, MARK3, ATPA, CHLE, KCND1, KCRB, NF1, CDK18, RAC2, MARK2, PGBM, PTPRG, PYC, KCMA1, PADI2, INF2, TRIO, MDGA1, CTP5A, ITB8, PSA, GRM2, PTCD3, PHAR1, LRFN1, SPP2B, HP1B3, NLRX1, PRC2C, TM38A, VGLU1, BIG3, PLXD1, AGAP2, AAK1, TEN4, CAMKV, DOP2, RMD3, SMU1, MCCB, GPD1L, LIGO2, SRBS2, CDKL5, K22O, VPS51, GRM5, CBAR2, SHAN3, UN13A, SE6L2, KCTD8, KCD16, LRC8B, VP13A, C2C4C, S2551, MRS2, DIRA2, CYFP2, TM1L2, RHG44, MYO1D, RABL6, DJC11, UIMC1, ICAM5, FLOT2, HNRPD, PTPRN, CSK21, KHDR1, IGF1R, CLD11, SPB6, ARHG2, VDAC2, VDAC3, VDAC1, ABCB7, ASTN1, P3C2A, CAC1E, LAMB2, CTNA2, SC6A3, CNTN2, PGCB, NEP, KCNA4, CD166, 5NTD, GSLG1, EWS, AP180, FSCN1, GDIB, GRIK5, GRID1, DDX5, ITIH3, IL1AP, CD47, KINH, KIF3B, LASP1, MYH10, MOG, NPM, PCBP2, CSPG2, DDX3Y, DLG4, RHOC, DAG1, DDX3X, SYPH, TICN1, NDUA4, NPTX1, NUP62, OMGP, HECAM, AOFA, ARP3B, SURF4, SYN2, CP3AD, H2B1H, GLPK, SDC3, GPDM, H2A2C, H2B2B, GRM7, GRM4, CLH1, K1549, GIT1, PKP4, PPR29, CNTN4, NLGN2, SV2C, THS7A, CE170, UBP7, BRNP2, SCMC3, LIGO3, DGKB, RPRD2, DPP10, S23IP, PPRC1, 2ABA, TNPO3, SIK3, U520, S39AA, TTYH3, XPO1, SPCS, KCRS, CSKI1, NRX3A, BCR, SARM1, PRRT3, TEFF1, RAB35, CA2D2, KCC2D, AT1A3, AT1A2, GNAS1, SDK2, WDFY3, NTRK3, RAD9B, DGLA, KCD12, MTMR5, UBE2O, CAND1, UBP34, RS9, 2ABB, H2B1C, TLN2, CSPG5, 2AAA, NP1L4, MTCH2, OPALI, CYFP1, TBB2A, HUWE1, IGS21, ROBO2, ACTN1, IGSF1, TR143, TPPP, OTUB1, KPBB, PP6R1, MAP6, ELP1, RRAGD, MRCKB, GABR2, CSMD3, EPT1, VAT1L, LRRC7, CAPS1, CYLD, AGRL1, AGRL3, CLAP1, AUXI, DAAM2, MADD, MFN2, NU214, UBE3C, PLXA4, FBX2, KCMF1, CBPM, GSTM7, AGFG2, LRC8A, HPLN4, VAC14, UBP2L, C2C2L, LRRT4, BDH, MK15, CNKR2, TENA, ASTN2, NEGR1, RAP2A, THEM6, SLIK5, SLIK4, SLIK3, SLIK2, NFASC, NRCAM, RHG32, SRGP3, EFTU, VGLU3, ERLN2, SV2B, MIRO1, EFR3A, LRRT2, U2AF4, ENPP6, SYAC, FLRT3, CBLN2, LRTM2, HPCL4, COR2B, S2512, ATLA1, NU107, RB39B, RB39A, ZN526, ANS1B, DLGP2, AHSA1, IPO5, NCEH1, LSAMP, CADM2, NOE2, ODP2, RBGPR, ECHA, SPA2L, SYNC, RL24, DAAM1, DMXL2, RLGPB, CLAP2, VMAT2, ARF2, NDRG4, ENPP4, HSDL1, RAP2C, GEPH, VATH, PMGT2, TTC12, AOFB, LRFN5, PIGT, CTL2, TENR, NLGN3, LRRT3, DYN3, LRC4C, ARHGA, SYFA, SI1L1, LCAP, EXOG, CERS6, SEP11, IKZF4, GP158, CWC22, VPS52, SCAI, ANK2, PDE10, PGM2L, SHFL, MIC60, WDR37, ABI1, SYNPO, T132C, GLT13, NED4L, RPB2, TCRG1, GNAL, H2B1K, H2B1P, H2A1F, H2A1H, H2A1K, OGT1, SYNJ1, SEPT8, MBOA7, PGP, NGEF, PYGB, COPA, MARK4, DOCK3, PLXB1, TXTP, AGRL2, TRHDE, R4RL1, RTN1, HS12A, K319L, DNM1L, AGRG1, PACS1, ABCF3, SDHA, HACD3, AGFG1, PAF1, IPO11, CCM2, MATR3, ATAT, LRRT1, LGI3, RPTOR, COL12, NAC2, THIL, EIF3L, MARE2, HNRPL, K0513, IQEC1, CACB4, SCPDL, BPHL, SNG3, EIF3C, H2AJ, DC1L1, S35A3, AP3M2, MUC18, UBQL1, PSPC1, NUP58, IGSF8, EXOC1, CACB1, CADM4, NUP85, SNP47, ACTY, WASF1, AMPB, MICU1, PSMD2, AT1A1, CDIPT, GD1L1, CC50A, HNRPU, REM2, S25A3, MARK1, CSPG4, SORC3, IPO4, SFPQ, BACH, S12A5, RAB14, SFXN3, ACLY, NDUS1, ITM2C, RMXL1, MIC25, ATPG, DDX1, MLP3A, UBAP2, ACSL6, NDUS2, ERLN1, DLG2, PI42C, IPO9, NDUV1, GRHPR, SRGP2, SRGP1, RAB4B, LRP1, WDR7, BRNP1, SYDC, TBB6, PDK3, TSN2, PDE2A, RPAB3, CSMD1, KCC2G, 2ABD, ATAD3, SFXN5, MYO5A, G37L1, RAP1B, SFXN1, NLGN1, NONO, RRAGC, TIP, MLF2, GAK, CDS2, NDUAA, ETFA, TNPO2, PTPRT, DNJA3, T121B, SF3B1, RIMS1, CNTP4, NTRI, PRP8, COX6C, MGST3, CNTP2, 6PGL, QCR8, NDUB4, RAB5A, GLRX3, AT5F1, S2546, MLP3B, 1433B, RL14, M2OM, UCRI, MIC19, PRPS2, NRX1A, MICU3, ARPC2, TBB2B, ROA0, CENPV, RL11, ILF2, TECR, RN181, BIEA, QCR1, OLA1, RL15, AL1B1, TOM70, MPC2, ODPB, MMS19, MGRN1, HNRPM, SCOT1, DYL2, RM28, RAB1B, LIGO1, RUFY3, MEII1, ATAD1, CUL5, GBRA4, TBB4A, GHC1, IDH3A, PRPS1, U2AF1, RL4, PSD12, SNAA, ATPO, BTBDH, QCR2, ALG2, AP2B1, RPN2, SUSD2, NDUA9, NDUS7, 6PGD, EIF3F, NDUS3, RAB13, XPO7, IPO7, NBEA, SORC2, VPS35, RPGF4, TBB3, XPO2, RTN3, LRBA, SPN90, TRIM2, DYHC1, LRP1B, LGI1, PRAF2, SV2A, SCAM5, NECT1, HYOU1, EXTL1, SORC1, DCLK1, MTOR, MINK1, ZN207, AP3B2, RHOA, HPLN1, FAK2, NAGAB, COPG2, KI21A, SHRM3, PLEC, DREB, S2513, EHD3, PLXB3, ADDA, DNJA2, GRM3, PCLO, SIA7A, ARP10, DCTN5, PLXC1, COPG1, GPC1, UBQL2, FBX6, SRR, AT2B2, CELR2, DEST, ARC1A, KAD1, GBRG1, GUAD, CBLN1, DGKE, VAS1, ADA22, ADA23, PEPL, CAD13, TEN1, TEN2, CUL1, ATRN, GLPK2, PDC6I, PFKAP, PYGM, SUCA, RBMX, GABR1, GSK3B, FPRP, E41L3, BUB3, CARM1, PSD13, CP46A, APC7, NCDN, ITB6, KCND2, NU160, HNRDL, SAE2, VATC1, VPP1, ARI1, CA2D3, SEPT3, AP3B1, STK39, DPP6, E41L1, SUCB1, SEPT5, GRIA4, GRIA3, HOME1
Species: Mus musculus
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Wu JL, Chiang MF, Hsu PH, Tsai DY, Hung KH, Wang YH, Angata T, Lin KI. O-GlcNAcylation is required for B cell homeostasis and antibody responses. Nature communications 2017 8(1) 29187734
Abstract:
O-linked N-acetylglucosamine (O-GlcNAc) transferase (Ogt) catalyzes O-GlcNAc modification. O-GlcNAcylation is increased after cross-linking of the B-cell receptor (BCR), but the physiological function of this reaction is unknown. Here we show that lack of Ogt in B-cell development not only causes severe defects in the activation of BCR signaling, but also perturbs B-cell homeostasis by enhancing apoptosis of mature B cells, partly as a result of impaired response to B-cell activating factor. O-GlcNAcylation of Lyn at serine 19 is crucial for efficient Lyn activation and Syk interaction in BCR-mediated B-cell activation and expansion. Ogt deficiency in germinal center (GC) B cells also results in enhanced apoptosis of GC B cells and memory B cells in an immune response, consequently causing a reduction of antibody levels. Together, these results demonstrate that B cells rely on O-GlcNAcylation to maintain homeostasis, transduce BCR-mediated activation signals and activate humoral immunity.
O-GlcNAc proteins:
FAIM3, BLTP1, BCORL, M3K15, KANL3, EXC6B, PLHD1, CTTB2, MYO1E, SCLT1, TAF4B, TCOF, FLOT1, OXLA, HDAC1, SYPL1, SEM4D, MA2B1, PPE2, PLD3, DPOD2, NOCT, HNRH1, API5, DFFA, MMP8, DPM1, EIF3D, ESS2, CTNL1, VTI1B, S28A2, FA5, CO4B, IGKC, LAC1, IGHA, IGHDM, HA11, LAMC1, TBA1B, LDHA, HVM51, SPTA1, ZFP1, EGR1, ENPL, RPB1, ITB1, ENV1, 4F2, HS90B, HA2B, HB2A, CD44, BLK, CN37, LAMP2, ZFP37, PTBP1, HB2I, BASI, FAS, EVI2A, MDR1A, BGAL, ITAL, LYN, TLN1, MOES, U2AF2, MAP4, GNA13, RL3, CATG, DPP4, PTN6, HEXA, NKTR, HMGB2, SUH, CEAM1, GTR3, DRG1, RAB5C, CD22, FMR1, VGFR1, HSPA9, CAP1, ECI1, FOXK1, STAT1, NKX25, TCPQ, H11, H13, IL12B, CAPZB, RL5, VDR, RET3, ADCY7, VA0D1, AAAT, IMA1, STOM, FUS, NICA, RU2A, EF2, AAAS, RUVB1, ABCE1, DCAF7, 1433G, ACTA, RS6, VATB2, RL23, RL8, PP2BA, RACK1, TBB4B, M4K1, ITPR3, SURF6, ELAV1, EVL, H2B1A, AT8A1, TCPH, TCPB, NXN, TBB5, HNRL2, CREB1, PLAK, 3MG, CO6A1, LG3BP, COE1, CNN2, NSUN2, HMHA1, SNUT2, SMCA4, TPC10, TGRM2, I20L2, LMF1, PUF60, ZSWM8, PRRC1, SC31A, CPZIP, ITAD, ULK4, ITA1, DYHC2, LIN54, JKIP3, GRHL3, MYO1G, SIN3A, IRAG2, SAMH1, KHDR1, LY75, RASA3, NPT2A, CAPR1, ARHG2, PML, IMA5, LAP2B, PRP4B, M4K2, TS101, PLSL, CTNA2, VSX2, CD37, SERA, PCBP2, TIF1B, COCH, NUP62, RALY, UT14A, ARG39, CLH1, ATS16, F120A, NOP58, TEDC2, U520, RRP12, SMHD1, ANO6, TTBK1, CHD4, SARM1, NUP98, RASL2, TNKS1, AT1A2, NFRKB, DDX55, DNA2, H2B1C, CMYA5, GIMA8, CYFP1, SPAG5, HNRPQ, RPF1, MBB1A, PRC2A, ADCY2, MOGS, SDA1, FA98B, WIPI2, TRRAP, XYLT1, WDR82, GNS, ERLN2, S38A9, WASF2, S2512, NIM1, TBL1R, ZN526, CARF, HES7, UNC80, RBGPR, ECHA, ELMO1, ATOSB, KMT2C, FLNA, TPC2, RBBP5, POGZ, DOC10, SYFA, SMKZ, COR2A, RBM14, DOCK2, CASP9, RAE1L, NUP88, RPB2, UACA, SYEP, P66A, VPS50, COPA, VWF, TXTP, ZN536, LMBD1, R4RL1, C2D1A, URP2, STX5, GT251, SDHA, PO121, ABLM1, COL12, ALAT1, RORB, PDLI2, ERO1B, CD177, PSPC1, NUP58, STAB2, LRC8C, COX18, MAVS, PLBL1, UN93B, EVI2B, MYH9, ESIP1, VIGLN, PSMD2, HNRL1, CCAR2, SP7, RECQ5, SFXN3, IF4A3, RINI, DDX1, UBAP2, S15A4, DNJC9, MASP2, UXS1, CSCL1, BMP2K, CYRIB, SYDC, C1TC, GLYR1, PDIA6, CIC, S12A6, ATAD3, MYO5A, MCLN1, ABEC3, STML2, SFXN1, PRP19, TARA, MCRS1, RTCB, NDUS5, S12A9, SF3B1, ANR17, NU155, TR34A, BAP1, PRP8, NUDC2, TSN31, RN138, RTRAF, RU2B, YETS4, M2OM, MIC19, SNX2, DDX28, CXXC1, RUSD4, ILF2, CHTOP, LUC7L, DIM1, MCES, SEC13, SP2, NOP56, U2AF1, EF1G, MCEM1, EVPL, PRP4, CMTR1, WWP2, DHB11, PESC, TLR9, IRX6, KRT81, RBP2, AFF4, KAT2B, STK3, NUP50, DDX21, ACINU, SIGIR, ZN207, SLAF1, SON, H2AY, MTA2, SAE1, MYO1C, RUVB2, TRPV2, PFKAP, ARC1B, ASAH1, VAPA, EHD1, IF2G, CLIC1, HNRPF
Species: Mus musculus
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Gurel Z, Zaro BW, Pratt MR, Sheibani N. Identification of O-GlcNAc modification targets in mouse retinal pericytes: implication of p53 in pathogenesis of diabetic retinopathy. PloS one 2014 9(5) 24788674
Abstract:
Hyperglycemia is the primary cause of the majority of diabetes complications, including diabetic retinopathy (DR). Hyperglycemic conditions have a detrimental effect on many tissues and cell types, especially the retinal vascular cells including early loss of pericytes (PC). However, the mechanisms behind this selective sensitivity of retinal PC to hyperglycemia are undefined. The O-linked β-N-acetylglucosamine (O-GlcNAc) modification is elevated under hyperglycemic condition, and thus, may present an important molecular modification impacting the hyperglycemia-driven complications of diabetes. We have recently demonstrated that the level of O-GlcNAc modification in response to high glucose is variable in various retinal vascular cells. Retinal PC responded with the highest increase in O-GlcNAc modification compared to retinal endothelial cells and astrocytes. Here we show that these differences translated into functional changes, with an increase in apoptosis of retinal PC, not just under high glucose but also under treatment with O-GlcNAc modification inducers, PUGNAc and Thiamet-G. To gain insight into the molecular mechanisms involved, we have used click-It chemistry and LC-MS analysis and identified 431 target proteins of O-GlcNAc modification in retinal PC using an alkynyl-modified GlcNAc analog (GlcNAlk). Among the O-GlcNAc target proteins identified here 115 of them were not previously reported to be target of O-GlcNAc modification. We have identified at least 34 of these proteins with important roles in various aspects of cell death processes. Our results indicated that increased O-GlcNAc modification of p53 was associated with an increase in its protein levels in retinal PC. Together our results suggest that post-translational O-GlcNAc modification of p53 and its increased levels may contribute to selective early loss of PC during diabetes. Thus, modulation of O-GlcNAc modification may provide a novel treatment strategy to prevent the initiation and progression of DR.
Species: Mus musculus
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Trinidad JC, Barkan DT, Gulledge BF, Thalhammer A, Sali A, Schoepfer R, Burlingame AL. Global identification and characterization of both O-GlcNAcylation and phosphorylation at the murine synapse. Molecular & cellular proteomics : MCP 2012 11(8) 22645316
Abstract:
O-linked N-acetylglucosamine (O-GlcNAc) is a dynamic, reversible monosaccharide modifier of serine and threonine residues on intracellular protein domains. Crosstalk between O-GlcNAcylation and phosphorylation has been hypothesized. Here, we identified over 1750 and 16,500 sites of O-GlcNAcylation and phosphorylation from murine synaptosomes, respectively. In total, 135 (7%) of all O-GlcNAcylation sites were also found to be sites of phosphorylation. Although many proteins were extensively phosphorylated and minimally O-GlcNAcylated, proteins found to be extensively O-GlcNAcylated were almost always phosphorylated to a similar or greater extent, indicating the O-GlcNAcylation system is specifically targeting a subset of the proteome that is also phosphorylated. Both PTMs usually occur on disordered regions of protein structure, within which, the location of O-GlcNAcylation and phosphorylation is virtually random with respect to each other, suggesting that negative crosstalk at the structural level is not a common phenomenon. As a class, protein kinases are found to be more extensively O-GlcNAcylated than proteins in general, indicating the potential for crosstalk of phosphorylation with O-GlcNAcylation via regulation of enzymatic activity.
O-GlcNAc proteins:
A0JNY3, A2A653, A2A654, TANC2, ZEP3, MA7D2, CKAP5, CAMP1, LZTS3, A2AJ19, AJM1, MA7D1, A2ALK6, RPGP1, UBR4, A2AP92, SKT, ANR63, A2ATK9, A2AUD5, A2BI30, A6H6J9, A6MDD2, A8DUV1, B1AQX6, B1AR09, GRIK3, B1ATI9, B1AWT3, NHSL2, FRS1L, UBP24, DLGP4, B2RQ57, B2RQ80, PYR1, B2RQL0, B2RQQ5, GNAI1, B2RUE8, OTU7B, B2RWX1, B6ZHC4, B6ZHC5, B7ZCA7, B7ZMP8, B7ZNA4, B7ZNF6, B7ZWM6, B9EHE8, CTTB2, B9EKL9, PTPRZ, D1FNM8, D3YU59, D3YWX2, DGKH, D3YXR8, PGBD5, SHAN1, D3Z0V7, D3Z2J5, D9HP81, E0CYT1, E9PUA3, E9PUC4, DGKD, E9PUR0, E9PV14, E9PV26, KI67, E9PWL1, E9PWM3, E9PY55, E9PZP8, E9Q1M1, E9Q2B2, E9Q3D6, NU153, E9Q3M9, E9Q4N6, E9Q616, E9Q6T8, E9Q6Y8, NUMA1, E9Q828, E9Q9I2, E9Q9J6, E9QA16, E9QAP7, E9QAR5, SC16A, E9QJU8, E9QMJ1, SYGP1, RFIP2, HXK2, CAN2, SC22B, DPYL2, STXB1, TCOF, DCTN1, GLU2B, EF2K, PRDX4, AIP, NUMBL, GSTO1, GSH0, M3K5, PSMD4, DHX15, NPC1, BMPR2, VIAAT, BCAT2, CTND2, PITM1, CSK22, REPS1, ACK1, SLK, CAC1B, PGRC1, IMPA1, SYUA, AKA7A, STRN, RL35A, AT2A2, PGAM2, ATX2, NMT1, E41L2, GPX4, EMC8, DHB12, HCN4, KDM6A, ZN326, SORL, GRPE2, KLC1, ZFR, O88568, HCN2, HCN1, BSN, TOM1, RPP30, DNJB5, COX1, HA1D, HBA, K2C1, MBP, ALDOA, PGFRB, LDHA, G6PI, ENPP1, NEUM, ANXA2, RIR1, HS90A, EGR1, MDHM, KCC4, NFL, NFM, GNAI2, PDIA1, NUCL, CADH1, RC3H2, LRC4B, IGS11, DERPC, UBB, IFI5B, IFI4, ANXA1, EF1A1, H2B1F, PARP1, HS90B, DMD, KCC2A, TCPA, A4, COX5A, GELS, UMPS, NCAM1, GPDA, MDHC, SRP54, RLA0, GLNA, H12, LEG1, DDX3L, SPTN1, AP2A2, TPIS, KS6A3, COF1, GNAO, NFH, SERPH, VIME, MTAP2, EIF3A, CBX3, IMDH2, MCM3, CTNA1, MAP4, GNA12, GNA13, PDIA3, PSB8, NCKP1, PABP1, FKBP4, HMGB2, AIMP1, LA, ACM4, SYWC, RANG, RAB5C, RAB18, CALX, PRDX1, RL12, PPM1B, DNLI1, CAP1, STAT3, PURA, OPRM, TCPQ, CX6A1, MSH2, H14, H11, ALDR, ALD2, CBP, AINX, NEDD4, RP3A, CAPZB, SRPRB, RL36, SOX2, HS74L, ADT1, ROA1, INPP, PCY1A, MCM4, CSRP3, RAB7A, CDN2A, HDGF, ADT2, IMA1, UBP10, KPYM, RIDA, HMGA2, RL10A, CCHL, SOX1, RAB2A, ATX1, CACB3, HMCS2, GOGA3, ATPK, ATPB, ACTN4, IDI1, ACOT8, PTPA, KCNN2, KCNN3, TB10A, TB182, SF3B6, MRTFB, DOCK4, MYPR, EIF3E, PCBP1, LIPA3, ACTB, IF4A1, SNP25, RAB10, CSN2, RRAS2, PRS8, RS15A, 1433E, RS18, RS11, SMD1, ABI2, EF1A2, ACTA, VATB2, RL23, RS24, GBB1, HSP7C, TCTP, GNAS2, 1433Z, HMGB1, IF5A1, ACTG, RS17, RS12, UB2L3, RACK1, ACTS, TBA4A, TBA1A, TBB4B, PLXA2, DCC, EBP, NFIX, EM55, HNRH2, NCOA1, ELAV1, RGRF2, USP9X, TCPB, TCPE, TCPZ, NUCB2, IRS2, WNK1, RL36A, CSRP1, SEPR, RS3A, DPYL1, MPRIP, CAC1A, ATP5J, BOP1, RS5, WBP2, CXAR, PLPL9, G3BP1, RBBP6, CDS1, TBB5, IL6RB, NMDE2, NMDE3, TOP2A, NOTC1, NDKB, AQP1, UBA1, CTNB1, S30BP, NFIA, NUCB1, MARK3, APLP1, ENAH, ATPA, TF65, YES, MARK2, PGBM, PYC, CAPR2, EMAL1, LARP7, BAX, CNN2, LYAR, CHD8, CNNM1, INF2, TT21B, Q0IJ77, TRIO, VGF, TANC1, CDK12, Q14B66, MA6D1, NSUN2, MCM9, PHAR1, PSD3, Q2Q7P0, FILA2, Q3TAD4, NB5R4, GUAA, METK2, PRC2C, Q3TRG3, PLPL6, K22E, YETS2, Q3TY93, FUBP2, F117B, Q3U882, LBR, TM109, FOXK2, Q3UFK1, Q3UGZ4, TNR6C, DAB2P, ZEP2, AAK1, Q3UHT7, DTX3L, EDC4, PARP3, WASC4, GRIN1, Q3UQ23, SRBS2, THSD4, MRCKA, SPRY3, KSR2, GRM5, TBCD9, LRRF1, ARMX5, STOX2, SHAN3, UBN1, OXR1, DDX17, PHAR4, ANR28, ZN608, Q571B7, PRAG1, TAB3, Q58DZ3, IQEC2, Q5DU62, AAPK1, NUFP2, UNKL, SMG7, RBM27, CYFP2, TM1L2, PSME4, ANR40, Q5SUH6, GGNB2, SYNRG, Q5SVJ0, RPGP2, TBC9B, ACACA, Q5SXC4, Q5XJV5, LMTK3, RN123, ZDHC8, SRC8, MYL6, SKI, SAMH1, IRGM1, CLD11, NPT2A, SPB6, VDAC2, VDAC3, VDAC1, STYX, RBBP4, ASNS, NCOA2, LAP2A, PPM1G, ASTN1, PRDX2, HCFC1, APC, KCNA4, AP180, FXR1, GDIB, GRID2, GRID1, CBX5, SERA, LASP1, NPM, PCBP2, M3K7, SRBS1, DBNL, SH3G1, CYTB, IF4G2, MINT, ZYX, RALY, TFE3, Q640L6, AR13B, HECAM, NPDC1, SYN2, TBR1, ISG15, ABCG1, ATP4A, MRC2, G3PT, PTN13, TPP2, CTNA3, SBNO1, BEGIN, K1549, GIT1, SLAI1, PKP4, PEAK1, CDK13, SH3R1, MYOF, ABLM3, ARMX2, CE170, LAR4B, NOP58, Q6GR78, TPM4, NIPBL, RRP5, FBX41, Q6NVA3, RPRD2, WWC2, ZN532, Q6NXW0, S23IP, SMHD1, NEST, CSKI1, Q6P9N8, MTSS2, AHDC1, PTN23, TRAK1, SRSF1, CHD4, DLGP3, NUP98, NYAP1, KCC2D, AT1A3, AT1A2, NFRKB, RIGI, MAGI1, WDFY3, TACC1, GGYF2, PF21A, KDM3B, CNOT1, LARP1, Q6ZQB7, NU188, Q6ZQJ9, Q6ZQK4, RS9, RL10, IF2A, SC6A5, SEM6D, 2AAA, EEIG1, MTCH2, PICAL, MRO2B, SCN4B, PLPR4, HNRPQ, TBB2A, SMAP2, Q7TNS5, PLPR3, MBB1A, LNP, TPPP, ATX2L, OTUB1, EXOS3, MAP6, ELP1, SI1L2, LRRC7, ERBIN, PHF24, R3HD2, NAV3, AGRL3, Q80TS6, AUXI, MADD, AVL9, PUM1, UBP8, NU214, SEPT9, NAA15, CAMP3, FA98B, TDRKH, EPN1, TMCC2, AGFG2, UBP2L, Q80X68, C2C2L, FLNB, LRRT4, WNK3, PRIC2, CNKR2, ZN598, SHAN2, AGRB3, Q80ZX0, ZFYV1, MAST4, RHG32, ENTP3, LPP, PEF1, ACTBL, TET3, MYPT2, IF4B, SYAC, F168A, TBL1R, TB10B, CSTP1, CARF, TGO1, FRM4A, SYIM, ANS1B, DLGP2, ZNT6, RCC2, ABLM2, LSS, UNC80, NOE2, CF015, EMSY, ODP2, GGA3, SYLC, DMXL2, IMP2L, CLAP2, LIPA2, ASPH, CNOT4, FLNA, F163B, GEPH, CREST, KCC1D, PGES2, KANK2, GEMI5, IFFO1, OSBL6, YTHD3, TM266, POGZ, LACC1, MAP1S, A16L1, SI1L1, PP4R4, MYO9A, THOP1, RBM14, Q8C2R1, CNOT2, Q8C6E9, CC134, ANK2, ELFN1, DIDO1, NHSL1, WDR37, DCTN4, SYNPO, BCAS3, VCIP1, Q8CE98, TAB1, SCYL2, NED4L, SYEP, F193A, GNAL, OGT1, NAV1, SYNJ1, RPGF2, EP400, PHC3, P66A, TBCE, VWF, STAU2, LIN7A, TBC23, ZBT20, RTN1, HS12A, DNM1L, UNC5B, UNC5A, ANLN, AGFG1, MATR3, Q8K314, AHI1, NDUS8, I2BPL, PREP, ABLM1, EIF3L, ERF3A, HNRPL, IQEC1, DOCK7, DC1L1, SPART, BST2, RFIP5, AT2A1, NUP35, LUZP1, MAVS, MYH9, PARN, AT1A1, SIR2, SNRK, ZDHC5, CC50A, AMOT, AGAP3, MARK1, Q8VHM5, FLNC, SFPQ, CPIN1, WDR13, BACH, S12A5, RAB14, ACLY, MIC25, ATPG, DDX1, SH3L3, UBAP2, NCOA5, CSDE1, FRS3, ZFN2B, DLG2, PTBP2, SRGP1, TMLH, DYST, SYUB, ELOV6, ALS2, TADBP, TBB6, CLIP1, LRC59, K2C5, UBXN1, SIR1, SPRE1, PAWR, MED1, MEP50, STML2, UBP11, NONO, RRAGC, VMA5A, MAOM, DCTN2, NEUA, DDAH2, DNJA3, TRXR3, RB6I2, SRRT, DSRAD, Q99NC2, RIMS1, ANR17, NU155, NTRI, RRBP1, ZN318, TRI33, ATP5L, RL17, GLOD4, DUT, SDHB, GLRX3, IFM3, NECP1, OCAD1, RRP44, TBB2B, DDAH1, YIF1B, ROA0, NIP7, MPPB, CYBP, RL11, TECR, CHTOP, SERB1, QCR1, NNRD, GARS, TOM70, RS19, SYRC, CNDP2, TMEDA, ODO2, DLGP1, TBB4A, IDH3A, IPYR, RL37, FIP1, TIM50, EF1G, RM17, GSDMD, DDA1, F135B, TM263, CNN3, PLIN3, PGAM1, XRN2, MYPT1, DJC10, KC1D, GNAI3, PUR6, S38A3, NDUBA, CRIP2, TSC1, RAI14, NBEA, TCF20, SORC2, DPYL5, TBB3, RBP2, ARHG7, RTN3, SPN90, RBCC1, PSMG2, DDX24, CLD12, PALLD, ELF2, TMOD3, NUDT3, COPB, NUP50, DDX21, TULP4, FLII, RPF2, CCG3, TBA8, IQGA1, NECT1, ADRM1, FMN2, PALS1, DCLK1, BAG3, CUL3, MINK1, REEP6, TRXR1, SYGP1, SON, APBB1, DREB, SPY2, MACF1, ULK2, ZBP1, TOM40, ADDA, GOGA5, DNJB1, MAP1A, PCLO, GAB1, RIPK3, NPAS3, SH2D3, NUBP2, ZEB2, SYT7, DEST, TEBP, SRS10, RPGR, PR40A, KHDR3, TPSN, CDYL, KAD2, TEN1, PDC6I, CHIP, IF4H, COR1B, COR1C, TNIP1, GANP, ARC, MPP2, SHAN1, VAPA, GSK3B, DEMA, E41L3, JIP1, GBP2, CAD20, P5CS, LAT1, DYR1B, MD2L1, SAE2, APCL, SYVC, MTMR1, MECP2, E41L1, SUCB1, HDAC6, GRIA4, HOME1, OSB10
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Zaro BW, Yang YY, Hang HC, Pratt MR. Chemical reporters for fluorescent detection and identification of O-GlcNAc-modified proteins reveal glycosylation of the ubiquitin ligase NEDD4-1. Proceedings of the National Academy of Sciences of the United States of America 2011 108(20) 21540332
Abstract:
The dynamic modification of nuclear and cytoplasmic proteins by the monosaccharide N-acetyl-glucosamine (GlcNAc) continues to emerge as an important regulator of many biological processes. Herein we describe the development of an alkynyl-modified GlcNAc analog (GlcNAlk) as a new chemical reporter of O-GlcNAc modification in living cells. This strategy is based on metabolic incorporation of reactive functionality into the GlcNAc biosynthetic pathway. When combined with the Cu(I)-catalyzed [3 + 2] azide-alkyne cycloaddition, this chemical reporter allowed for the robust in-gel fluorescent visualization of O-GlcNAc and affinity enrichment and identification of O-GlcNAc-modified proteins. Using in-gel fluorescence detection, we characterized the metabolic fates of GlcNAlk and the previously reported azido analog, GlcNAz. We confirmed previous results that GlcNAz can be metabolically interconverted to GalNAz, whereas GlcNAlk does not, thereby yielding a more specific metabolic reporter of O-GlcNAc modification. We also used GlcNAlk, in combination with a biotin affinity tag, to identify 374 proteins, 279 of which were not previously reported, and we subsequently confirmed the enrichment of three previously uncharacterized proteins. Finally we confirmed the O-GlcNAc modification of the ubiquitin ligase NEDD4-1, the first reported glycosylation of this protein.
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