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Hao Y, Li Z, Du X, Xie Q, Li D, Lei S, Guo Y. Characterization and chemoproteomic profiling of protein O-GlcNAcylation in SOD1-G93A mouse model. Molecular medicine (Cambridge, Mass.) 2025 31(1) 40021952
Abstract:
Amyotrophic lateral sclerosis (ALS) is a devastating motor neuron disease. Protein O-linked β-N-acetylglucosamine (O-GlcNAc) modification has been found to affect the processing of several important proteins implicated in ALS. However, the overall level and cellular localization of O-GlcNAc during ALS progression are incompletely understood, and large-scale profiling of O-GlcNAcylation sites in this context remains unexplored.
O-GlcNAc proteins:
TANC2, ZEP3, MA7D2, AMRA1, AJM1, CNTRL, SKT, TITIN, ARI1A, S14L1, KI16B, TM245, RHG42, CTTB2, SAFB1, CCDC6, SHAN1, CE350, SYGP1, TPR, DPYL2, EMD, SYPL1, M3K5, PPE2, VIAAT, CTND2, LIMK2, ACK1, SYUA, ATX2, PDLI1, ZN106, DC1I1, PLIN4, ZFR, HCN2, BSN, SYN1, CO4B, MBP, ARAF, ALDOA, GCR, CATL1, NFL, NFM, RC3H2, NCAM1, HSPB1, MAP1B, G3P, NFH, VIME, MTAP2, MOV10, CRYAB, KCC2B, PABP1, AIMP1, KIF4, FOXK1, STAT3, EAA2, AINX, SOX2, LMNA, INPP, RORG, APC1, ATX1, PCBP3, KCNN2, GCP3, TB182, KCNH8, NPHP4, YTHD1, PI5PA, MRTFB, DOCK4, RUVB1, ABI2, RS3, KCNA2, ZHX1, TRAF5, SURF6, NCOA1, RGRF2, LYAG, IRS2, GBX1, TNIK, WNK1, CSRP1, G3BP2, RLA2, CTNB1, PLAK, S30BP, ENAH, EMAL1, CNN2, CDK12, MA6D1, M3K13, PSD3, PLBL2, PRC2C, MILK2, YETS2, PBIP1, TPPC9, FUBP2, WNK2, LIMC1, TNR6C, ZEP2, AAK1, TNR6A, CAMKV, MINY4, GRM5, ARMX5, N42L1, PACS2, ABL2, OXR1, UN13A, HERC2, PHAR4, SRRM1, TR150, LIN54, TAB3, ZBTB4, UNKL, RBM27, TM1L2, MYO1G, ANR40, SYNRG, NACAD, A1CF, LAMA2, PMEL, NCOR1, LAMA5, BCAR1, HCFC1, MRE11, PACN1, MAFK, MCM7, PTN14, SPTB2, TAF6, SRBS1, DBNL, SH3G1, TLE4, IF4G2, MINT, ZYX, OMGP, HECAM, NR2E1, SF01, SYN2, GPDM, PLK4, SBNO1, SLAI1, PKP4, SYMC, SAM9L, SH3R1, HECD1, ABLM3, ARMX2, CE170, CDC5L, LAR4B, RHG20, F135A, SPKAP, SR140, KIF24, RPRD2, WWC2, REXO4, PTN23, IQCE, TRAK1, RN220, ERC2, NFRKB, MAGI1, TEX2, PF21A, CNOT1, NU188, TRPV1, SC6A5, SMAP2, CPEB3, PLPR3, MYCB2, PRC2B, TPPP, ATX2L, CCNT2, MAP6, SI1L2, ERBIN, R3HD2, AUXI, RERE, SNPH, RIMB2, NU214, INT2, SDA1, EPN1, AGFG2, C2C2L, NRAP, DDHD1, BCAS1, ZN598, CTIP, SHAN2, MACA1, ANR26, MAST4, RHG32, LPP, MYPT2, IF4B, ZN750, WDR48, TB10B, CSTP1, SP130, ZC21A, ZNT6, SUN2, RCC2, ABLM2, HSP13, CLAP2, CNOT4, SRRM2, IKZF5, TOX4, GEPH, DIP2A, LARP4, IFFO1, OSBL6, YTHD3, POGZ, ZHX2, TT21A, SI1L1, RBM14, UBP44, CNOT2, HYCC2, ANK2, DIDO1, PARP9, SYNPO, VCIP1, MB214, TAB1, RPB2, ASPP2, F193A, NAV1, SYNJ1, RPGF2, EP400, PHC3, VP37A, EPN2, PDLI5, CSR2B, FBP1L, SCAM1, ZBT20, HS12A, AGFG1, MATR3, FANCI, PO121, MRTFA, MTSS1, SPART, PPR42, NUP58, RFIP5, BRD8, PP6R2, CS047, LUZP1, RBM12, SC6A8, MAVS, MICA1, SIR2, AMOT, AGAP3, P66B, CCG8, TAF9, WDR13, UBAP2, NCOA5, PEX16, DCP1A, YTHD2, BMP2K, DYST, LRP1, SYUB, ALS2, BICD2, CLIP1, S12A6, NRBP, RP25L, TAB2, DDAH2, HGS, TM2D1, SNCAP, ASH1L, ANR17, RTN4, RRBP1, NUDC2, TPPP3, FLIP1, DDAH1, DLGP1, FIP1, TM263, CNN3, AL7A1, PLIN3, MYPT1, NDUBA, CRIP2, TSC1, NBEA, INP4A, RIMS2, SO1C1, RBP2, MKRN2, RTN3, NUDT3, LGI1, TULP4, ADRM1, FMN2, GIT2, BAG3, ZN207, ASAP1, SON, TBL1X, PLEC, MACF1, NPHP1, VAPB, ADDA, GOGA5, MAP1A, QKI, PCLO, GAB1, FBX6, FOXO1, ADA23, AKA12, NCOR2, C8AP2, TNIP1, DEMA, E41L3, SYUG, ITSN2, ZO2, ADNP, NEK4, APCL, MTMR1, MECP2, E41L1
Species: Mus musculus
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Hou C, Zhang H, Deng J, Wang X, Byers S, Levi M, Pak DTS, Moremen KW, Pei H, Hart GW, Ma J. Comprehensive Evaluation of Cleavable Bioorthogonal Probes for Site-Specific O-GlcNAc Proteomics. Molecular & cellular proteomics : MCP 2025 24(10) 40885482
Abstract:
O-linked β-N-acetylglucosamine (O-GlcNAc) modification (i.e., O-GlcNAcylation) on proteins is an essential modification in physiology and pathology. Although O-GlcNAcylation is functionally critical, its analysis has been challenging. Despite the existence of a number of methods developed in the past years, which one(s) might have the best performance is largely unclear. To that end, we conducted a rigorous comparison of several cleavable bioorthogonal biotin-alkyne probes which showed promise for sensitive O-GlcNAc proteomics. In brief, we developed chemoenzymatic labeling/click chemistry-based analytical workflows for O-GlcNAc proteomics by utilizing four cleavable bioorthogonal probes, including photocleavabe-biotin-alkyne (PC-biotin-alkyne), dialkoxydiphenylsilane-biotin-alkyne (DADPS-biotin-alkyne); 1-(4,4-dimethyl-2,6-dioxocyclohex-1-ylidene)ethyl-biotin-alkyne (Dde-biotin-alkyne), and diazobenzene-biotin-alkyne (Diazo-biotin-alkyne). The analytical performance of these probes was evaluated with synthetic O-GlcNAc peptides and then benchmarked by using mouse brain lysates for O-GlcNAc proteomics. Besides providing valuable technical insights into O-GlcNAc proteomics methods, our work yielded an unprecedented O-GlcNAc proteome depth in the mouse brain. In total, 2906 O-GlcNAc sites were unambiguously assigned on 878 proteins. Among them, 1611 sites were newly identified, including 138 O-GlcNAcylated tyrosine residues. Our work will help guide the selection/development of O-GlcNAc proteomics methods for future studies, provide an invaluable resource for functional elucidation of protein O-GlcNAcylation in brain biology, and yield critical insights into tyrosine O-GlcNAcylation.
O-GlcNAc proteins:
QSER1, TANC2, ZEP3, MA7D2, CKAP5, AMRA1, CAMP1, LZTS3, AJM1, MA7D1, FRPD1, RPGP1, UBR4, SKT, BCORL, AGRIN, TITIN, SVEP1, ARI1A, SPAS1, PHRF1, PTPRS, SCN2A, DLGP4, EP300, RBM25, ILDR2, CTTB2, PTPRZ, NLRC5, CCDC6, SHAN1, SET1A, PARP4, PRR12, TENS1, I2BP2, AKP13, C2CD2, ARI1B, ZC3HD, ARID2, NUMA1, PDZD7, SC16A, SYGP1, TPR, BICRA, SI1L3, PLGT3, DPYL2, EMD, STXB1, AKAP1, CLOCK, DCTN1, NUMBL, DBIL5, SYPL1, M3K5, SCRB2, ATN1, NOTC2, VIAAT, HAP1, CTND2, PITM1, OX2G, REPS1, AKAP2, ACK1, CNTP1, CAC1B, SYUA, PI51C, ATX2, E41L2, PDLI1, ULK1, UBR1, HCN4, KDM6A, ZN106, PDE8A, PPT1, ZFR, HCN2, HCN1, CTBP1, BSN, TOM1, AKA10, HIPK1, SYN1, LGMN, TPP1, THY1, LAMC1, MBP, ALDOA, GCR, CATL1, EGR1, HCK, ENPL, KCC4, NFL, NFM, ITB1, RC3H2, MAMD1, ATX1L, CATB, TAU, LAMP1, DMD, KCC2A, ITPR1, CNTN1, NCAM1, AT1B2, HSPB1, MAP1B, G3P, ATF2, PPIA, CATD, BASI, COF1, NFH, BIP, HEXB, MTAP2, MAG, CYTC, EMB, GRIA1, GRIA2, RS2, RGRF1, KCC2B, PABP1, C5AR1, AIMP1, DPOA2, RAB23, NMDE1, NMDZ1, FMR1, FOXK1, STAT3, EAA2, EGR3, RAD52, ITAV, CBP, AINX, NEDD4, STT3A, RP3A, EPB41, RFX1, SOX2, LMNA, MPIP1, INPP, DHI1, ARSB, VATA, DVL1, ADCY7, DBX1, E41LA, ARNT, SOX1, ATX1, RD23B, 3BP1, AMRP, CX6B1, CTBP2, MAZ, WFS1, PCBP3, PTPA, KCNN2, FOXP1, TB10A, TB182, GMEB2, KCNH8, CAPAM, RHG39, YTHD1, RPC2, PI5PA, MRTFB, DOCK4, IRPL1, MYPR, ABI2, GBB1, RAB3A, VAMP2, KCNA2, KCNJ3, ZHX1, DCC, NFIX, NCOA1, RGRF2, USP9X, TP53B, NACAM, LYAG, IRS2, TNIK, WNK1, G3BP2, ARG28, MPRIP, CAC1A, NPAS2, GRM1, XRN1, SHPS1, NEO1, G3BP1, NFIB, RLA2, GABPA, CBPE, NMDE2, NMDE3, NOTC1, CTNB1, PLAK, S30BP, ZEP1, ENAH, KCNB1, RCN1, PGBM, EMAL1, LG3BP, TLE3, MITF, SSRP1, CHD8, TRIO, TANC1, RELCH, CDK12, MA6D1, F171B, SHRM4, PHAR1, GSK3A, PSD3, MLXIP, NELL1, ESP1, PLBL2, PDLI7, PRC2C, MILK2, YETS2, SRSF6, FUBP2, SRBP2, GSE1, F117B, WDR62, FOXK2, CARL3, DIP2B, WNK2, LIMC1, TNR6C, DAB2P, AGAP2, ZEP2, ZSWM8, AAK1, TEN4, TNR6A, CAMKV, MTCL1, PKHA7, COBL1, GRIN1, PRRC1, MINY4, FCHO2, SNX21, LIGO2, MRCKA, KSR2, GRM5, ARMX5, ELAP2, GARL3, 5NTC, PACS2, STOX2, UBN1, ABL2, OXR1, DSCL1, CDV3, PHAR4, ANR28, LRC47, SRRM1, EME2, LIN54, TAB3, STB5L, NEXMI, JCAD, NYNRI, NUFP2, UNKL, PRSR1, OSBP2, SMG7, LRRK2, RBM27, PHF12, CYFP2, TM1L2, ANR40, CCD42, SYNRG, RPGP2, NACAD, LHPL4, EPAB2, LMTK3, SIN3A, SRC8, ICAM5, LAMA2, ITF2, CAPR1, NCOR1, FOXG1, LAMA5, NCOA2, LAMC2, IL18R, NAB1, ASTN1, SPIN1, PAPOA, HCFC1, SAP, NELL2, APC, PGCB, ZN638, AP180, FXR1, GRID2, GRID1, PACN1, HIRA, RAI1, MAFK, NPM, NOTC3, CSPG2, M3K7, DAG1, RO52, SN, SPTB2, TAF6, SPEG, ASPP1, SRBS1, DBNL, SH3G1, TLE4, SP4, IF4G2, MINT, ZYX, OMGP, MEF2D, TFE3, PAN3, HECAM, SF01, SYN2, TBR1, DHSO, CGT, CH058, SBNO1, CRTC1, BEGIN, K1549, GIT1, SLAI1, PKP4, SYMC, CDK13, GBA2, SH3R1, PREX1, JHD2C, HECD1, MOR2A, ABLM3, TBC12, ARMX2, CE170, LAR4B, RHG21, HELZ, MEG10, SCAF8, LIGO3, ZZZ3, F135A, FBX41, SPKAP, RPRD2, WWC2, ZN532, DPP10, TAF9B, S23IP, IF4G1, RBM26, NSD3, SNX19, FHOD1, FKB15, MTSS2, BCR, AHDC1, AAKB2, PTN23, LPPRC, PAPD7, MFF, PIGS, TRAK1, PHLB1, KMT2D, RN220, DLGP3, RA54B, GMIP, WASC2, ERC2, KCC2D, NFRKB, ALEX, MAGI1, CENPE, DNMBP, GGYF2, TEX2, PF21A, KDM3B, FNBP4, CNOT1, LARP1, NU188, SYNE1, IF2A, UB2R2, CMYA5, SEM6D, SOX11, ASAP2, HUWE1, SMAP2, PLPR3, PRC2B, C2CD5, TPPP, MACOI, AMPH, ATX2L, PRC2A, TMM94, PP6R1, MAP6, MCAF1, DAAF9, SI1L2, LRRC7, ERBIN, PHF24, R3HD2, NAV3, AGRL1, DEND, AUXI, RERE, SNPH, MADD, RIMB2, PUM1, NU214, SEPT9, SESD1, CBPM, SRA1, EPN1, AKNA, HYDIN, UBN2, AGFG2, CHST2, T106B, C2C2L, REPS2, WNK3, DDHD1, CNKR2, BCAS1, ZN598, SHAN2, PKHL1, S2611, ZFYV1, NRCAM, DLG1, MAST4, RHG32, GPHB5, RN214, LPP, MYPT2, TB10B, CSTP1, SP130, ZC3HE, DLGP2, ZC21A, ZNT6, SUN2, EME1, TNR6B, BAIP2, ABLM2, NCEH1, LRFN3, SHC2, SEN34, FAT3, DMXL2, GORAB, CLAP2, K1671, FAKD3, LIPA2, CNOT4, RALYL, SRRM2, TOX4, PAMR1, F163B, GEPH, CREST, KCC1D, GRIN3, LARP4, Z385B, IFFO1, OSBL6, CC169, TENR, YTHD3, STON2, TM266, POGZ, DOC10, ZHX2, EPC2, SWAHC, ZHX3, SI1L1, SH3R3, FRS2, RBM14, CNOT2, MOR2B, HYCC2, ANK2, ELFN1, TM163, DIDO1, SMAG1, SYNPO, BCAS3, VCIP1, BAKOR, TAB1, SCYL2, NED4L, MEF2C, ASPP2, TENS2, F193A, OGT1, CHERP, NAV1, SYNJ1, RPGF2, EP400, PHC3, DPYD, VP37A, EPN2, P66A, PDLI5, ANM5, DOCK3, PLXB1, DNER, SPAT2, SCAM1, SAM14, ZBT20, PHYIP, RTN1, HS12A, C2D1A, UNC5A, PACS1, TRI68, BRD3, LS14A, AGFG1, MATR3, DEN1A, I2BPL, PO121, ABLM1, MRTFA, RPTOR, PLCE1, SPNS1, CACL1, KCNC4, DC1L1, MTSS1, SPART, LRC42, ZN445, RFIP5, IGSF8, BRD8, WIPI1, CDK8, PP6R2, SHLB2, CS047, NTNG2, PP14C, STAB2, LUZP1, RBM12, STAB1, OTU7A, SC6A8, ULA1, CLPT1, MAVS, GRAP1, SGIP1, PI3R4, PHIP, SIR2, GOLI, AMOT, AGAP3, WASF3, P66B, CCG8, TAF9, ZCH14, MCR, SFPQ, WDR13, UBAP2, SMAP1, NCOA5, CXXC5, FRS3, SPS2L, FUBP1, SH319, ZFN2B, VPS36, DLG2, DYH8, DCP1A, YTHD2, PTBP2, SRGP2, SRGP1, BMP2K, DYST, LRP1, SYUB, ALS2, TRFE, GPS2, CLIP1, WAC, SPRE1, MED1, NRBP, NPTXR, GGT7, GORS2, NONO, TAB2, DPP3, EPN4, RNF34, GAK, DDAH2, ZN281, HGS, RB6I2, RIMS1, ANR17, RTN4, RRBP1, ZN318, TRI33, MZT2, PCYOX, NECP1, FLIP1, NRX1A, SNX2, DDAH1, YIF1B, NOPC1, CYGB, GFOD2, TPD54, CEP97, CD37L, SSBP3, SARNP, SP2, UB2V2, DLGP1, NDUV2, SH24A, FIP1, ST1C2, F135B, TM263, CNPY3, RM12, BTBDH, AL7A1, PLIN3, MYPT1, LNEBL, DCAF6, KC1D, CRIP2, TSC1, NBEA, TCF20, CPSF1, DPYL5, RIMS2, ZN704, RBP2, RTN3, SPN90, SP6, GILT, CLD12, ELF2, TSSC4, LRP1B, NUDT3, CATR, PPR3F, NUP50, TULP4, ORC3, ATR, HYOU1, ADRM1, FMN2, NCOA6, BAG3, MINK1, ZN207, PHC2, SRCN1, ASAP1, SON, SALL2, LIMD1, TBL1X, APBB1, PLEC, MACF1, ULK2, ADDB, ADDA, PCX1, GOGA5, NDRG2, MAGD1, MAP1A, QKI, PCLO, GAB1, MAGL2, FBX6, NPAS3, HIPK2, SH2D3, CATJ, YLPM1, CELR2, RHG07, GUAD, FOXO1, TAGL3, ADA22, AKA12, TEN1, TEN3, NCOR2, ATRN, COR1B, SR5A3, GANP, NFAT5, ASAH1, GSK3B, DEMA, E41L3, CARM1, JIP1, KCNH3, MAGI2, FXR2, SYUG, CLIP2, PALM, ITSN1, ITSN2, ZO2, DYR1B, APCL, BAG6, DPP6, MTMR1, MECP2, SE1L1, E41L1, GRIA3, HOME1
Species: Mus musculus
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Liu X, Cai YD, Hou C, Liu X, Luo Y, Mendiola AJP, Xu X, Luo Y, Zheng H, Zhao C, Chen CH, Zhang Y, Xiang YK, Ma J, Chiu JC. O-GlcNAcylation of nuclear proteins in the mouse liver exhibit daily oscillations that are influenced by meal timing. PLoS biology 2025 23(9) 40997131
Abstract:
The liver circadian clock and hepatic transcriptome are highly responsive to metabolic signals generated from feeding-fasting rhythm. Previous studies have identified a number of nutrient-sensitive signaling pathways that could interpret metabolic input to regulate rhythmic hepatic biology. Here, we investigated the role of O-GlcNAcylation, a nutrient-sensitive post-translational modification (PTM) in mediating metabolic regulation of rhythmic biology in the liver. We observe daily oscillation of global nuclear protein O-GlcNAcylation in the liver of mice subjected to night-restricted feeding (NRF) using label-free global O-GlcNAc proteomics. Additional site-specific O-GlcNAc analysis by tandem mass tag mass spectrometry further supports temporal differences in O-GlcNAcylation by revealing day-night differences. Proteins involved in gene expression are enriched among rhythmically O-GlcNAcylated proteins, suggesting rhythmic O-GlcNAcylation may directly regulate the hepatic transcriptome. We show that rhythmic O-GlcNAcylation can also indirectly modulate nuclear proteins by interacting with phosphorylation. Several proteins harboring O-GlcNAcylation-phosphorylation interplay motif exhibit rhythmic O-GlcNAcylation and phosphorylation. Specifically, we show that O-GlcNAcylation occurs at a phospho-degron of a key circadian transcriptional activator, circadian locomotor output cycles kaput (CLOCK), thus regulating its stability and transcriptional output. Finally, we report that day-restricted feeding (DRF) in the nocturnal mouse significantly alters O-GlcNAcylation pattern. Whereas global O-GlcNAcylation analysis indicates dampening of global O-GlcNAcylation rhythm in mice fed under DRF, site-specific analysis reveals differential responses of O-GlcNAc sites when timing of food intake is altered. Notably, a substantial number of O-GlcNAcylation sites exhibit inverted day-night profiles when mice are subjected to DRF. This suggests the dysregulation of daily nuclear protein O-GlcNAcylation rhythm may contribute to the disruption in liver transcriptome previously observed in DRF condition. In summary, our results provide new mechanistic insights into metabolic regulation of hepatic transcriptional regulators via interplay between O-GlcNAcylation and phosphorylation and shed light on the deleterious effects of improper mealtimes.
O-GlcNAc proteins:
A0A075B680, A0A087WQ44, A0A087WSN6, A0A0A6YVV8, A0A0B6VMB2, A0A0F7QZE4, A0A0G2JGY6, A0A0R4J092, A0A0U1RNL9, A0A1I7Q4G8, A0A1N9PTV1, A0A1Y7VP67, A0A286YCY7, A2A654, ZMYM4, TM201, MED14, A2ADB1, A2AJ72, S35D1, BCORL, A2AQR4, A2ATN3, MGAP, KANL3, PHRF1, B1AR09, B1ASA5, B2RQG2, B2RR24, B2RT41, B2RUQ2, EP300, RBM25, B7ZNL9, D3YWX2, D3Z0K6, D3Z2U7, E9PUF4, E9PUH7, FIBA, E9PV38, SET1A, PARP4, PRR12, E9Q1A5, E9Q1M6, ICE1, E9Q3L4, ANR11, ARI1B, SETD2, YTDC1, ZC3HD, ARID2, E9Q7G1, E9Q9V3, E9Q9Y2, E9QAN9, E9QAP7, E9QKL0, E9QMD3, E9QNA7, F6R9G0, F6T8X6, BICRA, G3UVU2, G3X8Q1, G3X928, G3X961, G3X972, G3X9Q0, PCF11, G5E896, H9KV00, ERR1, GTPB1, HNF6, CLOCK, GLU2B, ATN1, IMA3, KLF12, CALU, AF10, ZN143, SP3, KDM6A, ZN106, ZFR, CCNK, PIAS1, LGMN, SP1, IGHG3, CFAH, EGR1, ITB1, ATX1L, CATB, ITPR1, B4GT1, HNF1A, PGH1, A1AT2, NFYA, PO2F1, 3BHS3, HNF1B, CEBPB, CELF1, RXRA, VTNC, NKTR, SUH, ANT3, G6PC1, FOXA1, FOXK1, STAT3, CBP, FKBP2, FOSL2, RFX1, LMNA, STS, MAT1, PON1, CEBPA, ATX1, RD23B, KMT2A, FUS, PAXB1, LMA2L, MRTFB, SUMO2, PP1B, RS11, SMD3, NFYB, SUMO1, ZHX1, TIAR, TBX3, NFYC, ATF1, ERG, NFIB, RBBP6, GABPA, CREB1, S30BP, NFIA, ZEP1, SPA3M, PPA5, CLUS, GATA4, CHD8, CDK12, Q3T9J2, KHDC4, Q3TGN5, PRC2C, CIART, K22E, YETS2, Q3U1M7, LMF1, FOXK2, PUF60, RREB1, ZEP2, UD3A1, ZCCHV, PRRC1, SFSWA, PRD10, ERMP1, Q3UXF4, TMED1, ZBT45, Q569X9, LIN54, TASO2, RESF1, ZN652, NUFP2, KDM6B, Q5PRE9, Q5RIM6, RBM27, UTP18, Q5SUT0, MED13, Q5SXC4, SFR19, UIMC1, A1CF, SIN3A, CSK21, CAPR1, MEF2A, RBBP7, KLF3, NCOA2, USF1, CTCF, GATA6, TS101, HCFC1, ZN148, HIRA, LASP1, RAI1, MAFK, PRG2, SPTB2, SSXT, TAF6, UD19, NUP62, UD11, MEF2D, TIF1A, USF2, CDK13, JHD2C, HECD1, Q6DI81, SCAF8, NOMO1, FND3B, Q6NXL1, ZMIZ1, NSD3, UGGG1, ALG8, AHDC1, PTN23, PIGS, NUP98, NFRKB, GNAS1, ONEC2, FNBP4, CNOT1, NU188, SPCS3, PICAL, HUWE1, CPEB4, PRR14, ATX2L, NACC1, MCAF1, KANL1, NU214, PR40B, UBN2, TNC18, UBP2L, ZN598, Q80ZX0, DDX42, LPP, TET3, E41L5, SP130, ZC3HE, SUN2, EST2E, NCEH1, ARI5B, EMSY, TM260, RFOX2, TM209, KMT2C, ASPH, SRRM2, NUP54, CPSF7, TOX4, IFIX, CREST, Z385B, PIGT, PGLT1, YTHD3, KAT6A, ASXL2, ZN609, POGZ, SREK1, ZHX2, ZHX3, P20D1, MBNL2, RBM14, PIAS2, CNOT2, ITCH, DIDO1, EPC1, SCYL2, G6PE, TCRG1, BCOR, CCAR1, Q8CHB3, ADNP2, BICRL, EP400, PHC3, P66A, FWCH1, PDLI5, NUP42, ZMIZ2, BTD, UD3A2, ESRP2, TAF10, ZBT20, Q8K154, GT251, ALG3, BRD3, I2BPL, PO121, SF3A1, EST2A, SF3B4, Q8R084, ZBT44, MTSS1, TMED4, ZC3HA, UBQL1, NUP58, BRD8, ATX7, STAB2, RBM12, RBPS2, MED25, MAVS, ALG12, HNRL1, CDIPT, SRSF4, P66B, TAF9, MCR, SFPQ, MBOA5, UBAP2, SMAP1, NCOA5, RBM47, CREL1, SC16B, BAZ2A, RBM5, RISC, ALS2, BCL7B, TMCO1, SYDC, CIC, MED15, WAC, MED1, GORS2, RBM10, ZN281, MLXPL, ANR17, ZN318, TRI33, PCYOX, NECP1, RBM33, SSRA, CREL2, PINX1, INT12, SP2, PHF14, SUN1, APMAP, FIP1, AP2B1, RPN2, LMAN2, AKAP8, MYPT1, RSRC1, EIF3F, Q9EQC8, ERAP1, SALL1, Q9ERL0, RBP2, RTN3, PALLD, TF2H2, ANM1, NUP50, HAKAI, HYOU1, ELOV1, ZN207, DOPP1, CCNT1, TBL1X, PO210, VKGC, QKI, UBQL2, HIPK2, COP1, PR40A, FOXO1, PIGN, MAN1, GANP, ENTP5, NFAT5, CARM1, FOXO3, FBLN5, IF2H, Q9Z1A1, DEAF1, HTAI2, HNRPF, ITPR2, S4R1W8, V9GX43
Species: Mus musculus
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Hao Y, Li X, Qin K, Shi Y, He Y, Zhang C, Cheng B, Zhang X, Hu G, Liang S, Tang Q, Chen X. Chemoproteomic and Transcriptomic Analysis Reveals that O-GlcNAc Regulates Mouse Embryonic Stem Cell Fate through the Pluripotency Network. Angewandte Chemie (International ed. in English) 2023 62(17) 36852467
Abstract:
Self-renewal and differentiation of embryonic stem cells (ESCs) are influenced by protein O-linked β-N-acetylglucosamine (O-GlcNAc) modification, but the underlying mechanism remains incompletely understood. Herein, we report the identification of 979 O-GlcNAcylated proteins and 1340 modification sites in mouse ESCs (mESCs) by using a chemoproteomics method. In addition to OCT4 and SOX2, the third core pluripotency transcription factor (PTF) NANOG was found to be modified and functionally regulated by O-GlcNAc. Upon differentiation along the neuronal lineage, the O-GlcNAc stoichiometry at 123 sites of 83 proteins-several of which were PTFs-was found to decline. Transcriptomic profiling reveals 2456 differentially expressed genes responsive to OGT inhibition during differentiation, of which 901 are target genes of core PTFs. By acting on the core PTF network, suppression of O-GlcNAcylation upregulates neuron-related genes, thus contributing to mESC fate determination.
O-GlcNAc proteins:
AMRA1, SETX, SKT, BCORL, AGRIN, MGAP, ARI1A, CHD6, PHRF1, ZCH24, EP300, KIF7, KI67, CE350, ANR11, NUMA1, TPR, MORC3, TAF4B, KMT2B, EMD, AKAP1, TCOF, DCTN1, MNT, NCOA3, ATN1, ECP3, DPOD2, CTND2, PIAS3, AF10, ACK1, GET3, DSG2, ESS2, ATX2, PDLI1, ULK1, BARD1, KDM6A, ZN106, NSD1, ZFR, HIPK1, SETB1, LAMC1, MYCN, GCR, EGR1, RC3H2, ATX1L, DERPC, K2C8, HSPB1, JUND, FGFR1, G3P, ATF2, COF1, HEXB, VIME, PO5F1, CBL, CCNB1, PO2F1, RS2, NFKB1, MAX, PABP1, NEDD1, PTN12, FMR1, ELK1, FOXK1, STAT3, SOX15, PLIN2, CBP, NEDD4, YAP1, RFX1, SOX2, LMNA, ROA1, S1PR2, ARNT, RD23A, PLTP, KMT2A, KLF16, FOXP1, TB182, GMEB2, SENP1, YTHD1, MRTFB, DOCK4, STIM1, TBX3, NCOA1, ERF, SIAE, NACAM, ATF1, WNK1, G3BP2, DNLI3, G3BP1, RLA2, GABPA, S30BP, ZEP1, ENAH, SOX13, CAPR2, APLP2, CLUS, TLE3, GATA4, MITF, CHD8, ZCH18, TANC1, CDK12, SAP25, LIN41, MLXIP, HROB, VRTN, CO039, PDLI7, SMCA4, PRC2C, MILK2, MIDN, YETS2, PBIP1, FUBP2, TFPT, SRBP2, GSE1, F117B, ZN865, WDR62, QRIC1, FOXK2, RREB1, TNR6C, DAB2P, TNR6A, RHG17, PKHA7, COBL1, FCHO2, TET1, ARMX5, GARL3, TET2, CDV3, PHAR4, C2CD3, LIN54, NPA1P, TAB3, TASO2, RESF1, NUFP2, UNKL, COBL, KDM6B, PRSR1, SMG7, RBM27, PHF12, ZDBF2, PUR4, SYNRG, UIMC1, SIN3A, NFAC2, SRC8, SKIL, ELF1, KLF4, NCOR1, KLF3, NCOA2, FOXD3, PAPOA, HCFC1, P3C2A, SIX4, ZFHX3, TOB1, AP180, GLI3, ATRX, MAFK, NPM, M3K7, DAG1, SPTB2, TAF6, TIF1B, SPT6H, SH3G1, ARI3A, TLE1, TLE4, IF4G2, MINT, ZIC3, ZYX, NUP62, PHC1, TFE3, TIF1A, SF01, DAZL, RBL1, KNL1, BCL9L, SBNO1, SLAI1, PKP4, CDK13, SH3R1, JHD2C, HECD1, ARMX2, LAR4B, RHG21, HELZ, SCAF8, UTF1, PKHG2, NIPBL, CCD66, F135A, RPRD2, WWC2, ZN532, KRBA1, TAF9B, RBM26, INT1, BCR, AHDC1, PTN23, PAPD7, KDM3A, KMT2D, CHD4, RN220, NUP98, NFRKB, GGYF2, LCOR, TEX2, PF21A, KDM3B, FNBP4, CNOT1, LARP1, RHG26, NU188, CNDD3, SPAG5, HUWE1, SMAP2, CPEB3, MYCB2, PRC2B, PRR14, MACOI, ATX2L, CKP2L, PRC2A, MCAF1, SI1L2, KANL1, ERBIN, R3HD2, RERE, PUM2, PUM1, NU214, WNK4, TCAM1, SAS6, CAMP3, UBN2, TNC18, AGFG2, WNK3, ZN598, CTIP, SHAN2, NANOG, DDX42, RHG32, VGLU3, LPP, TET3, MYPT2, IF4B, CNO10, MISSL, TB10B, CARF, TGO1, ZN879, SP130, ZC3HE, ZNT6, SUN2, TNR6B, ARI5B, BNC2, KAT6B, KMT2C, CLAP2, CNOT4, SRRM2, TOX4, GEPH, SYP2L, LARP4, KANK2, SALL4, YTHD3, TOIP2, KAT6A, ASXL2, POGZ, TAF5, ZHX2, EPC2, SI1L1, CND2, RBM14, SUCO, CNOT2, DIDO1, SMAG1, LENG8, CDAN1, DPPA4, LRIF1, VCIP1, MB214, TAB1, SCYL2, ASPP2, LS14B, SYEP, F193A, BCOR, OGT1, SUGP1, NAV1, SYNJ1, ADNP2, RPGF2, BICRL, EP400, PHC3, VP37A, EPN2, P66A, PDLI5, ELYS, ZBT20, ANLN, AGFG1, MATR3, CASC3, I2BPL, PO121, ALMS1, SF3A1, GRHL2, ATF7, CACL1, DC1L1, MTSS1, SPART, TDIF2, HBP1, NUP58, RFIP5, BRD8, WIPI1, CDK8, CS047, ATX7, NUP35, LUZP1, RPAP2, NDC1, MAVS, AMOT, CSKI2, P66B, TAF9, IPO4, ZCH14, UBAP2, NCOA5, FUBP1, RBM47, AJUBA, VPS36, DCP1A, EGLN2, YTHD2, SRGP2, GRHL1, BCL7B, P4R3B, PLRG1, WAC, TRPS1, MED1, ACATN, NRBP, RP25L, NONO, TAB2, EPN4, DDAH2, NOG2, ZN281, HGS, NASP, ARIP4, ANR17, ZN318, TRI33, MZT2, ZWINT, ECD, YIF1B, ROA0, DHRS7, TPD54, SSBP3, PSRC1, SARNP, BCL9, SP2, NOP56, SH24A, FIP1, PLIN3, MYPT1, KC1D, TCF20, TOR3A, SALL1, ZN704, RBP2, UBE4B, TBX20, AFF4, RBCC1, 4ET, PALLD, ELF2, TSSC4, NUDT3, HAKAI, ADRM1, NCOA6, FANCA, GIT2, BAG3, TOB2, ZN207, SON, TBL1X, PLEC, MACF1, GOGA5, QKI, GAB1, DMRT1, YLPM1, PCM1, RHG07, TAF7, FOXO1, ADA23, AKA12, UXT, MAN1, NCOR2, AKT3, COR1B, TNIP1, GANP, DEMA, CARM1, RGAP1, ITSN2, ZO2, KLF5, ADNP, ARI3B, BCL3, SE1L1, E41L1, ZN292
Species: Mus musculus
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Shi Q, Shen Q, Liu Y, Shi Y, Huang W, Wang X, Li Z, Chai Y, Wang H, Hu X, Li N, Zhang Q, Cao X. Increased glucose metabolism in TAMs fuels O-GlcNAcylation of lysosomal Cathepsin B to promote cancer metastasis and chemoresistance. Cancer cell 2022 40(10) 36084651
Abstract:
How glucose metabolism remodels pro-tumor functions of tumor-associated macrophages (TAMs) needs further investigation. Here we show that M2-like TAMs bear the highest individual capacity to take up intratumoral glucose. Their increased glucose uptake fuels hexosamine biosynthetic pathway-dependent O-GlcNAcylation to promote cancer metastasis and chemoresistance. Glucose metabolism promotes O-GlcNAcylation of the lysosome-encapsulated protease Cathepsin B at serine 210, mediated by lysosome-localized O-GlcNAc transferase (OGT), elevating mature Cathepsin B in macrophages and its secretion in the tumor microenvironment (TME). Loss of OGT in macrophages reduces O-GlcNAcylation and mature Cathepsin B in the TME and disrupts cancer metastasis and chemoresistance. Human TAMs with high OGT are positively correlated with Cathepsin B expression, and both levels predict chemotherapy response and prognosis of individuals with cancer. Our study reports the biological and potential clinical significance of glucose metabolism in tumor-promoting TAMs and reveals insights into the underlying mechanisms.
Species: Mus musculus
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Huynh VN, Wang S, Ouyang X, Wani WY, Johnson MS, Chacko BK, Jegga AG, Qian WJ, Chatham JC, Darley-Usmar VM, Zhang J. Defining the Dynamic Regulation of O-GlcNAc Proteome in the Mouse Cortex---the O-GlcNAcylation of Synaptic and Trafficking Proteins Related to Neurodegenerative Diseases. Frontiers in aging 2021 2 35822049
Abstract:
O-linked conjugation of ß-N-acetyl-glucosamine (O-GlcNAc) to serine and threonine residues is a post-translational modification process that senses nutrient availability and cellular stress and regulates diverse biological processes that are involved in neurodegenerative diseases and provide potential targets for therapeutics development. However, very little is known of the networks involved in the brain that are responsive to changes in the O-GlcNAc proteome. Pharmacological increase of protein O-GlcNAcylation by Thiamet G (TG) has been shown to decrease tau phosphorylation and neurotoxicity, and proposed as a therapy in Alzheimer's disease (AD). However, acute TG exposure impairs learning and memory, and protein O-GlcNAcylation is increased in the aging rat brain and in Parkinson's disease (PD) brains. To define the cortical O-GlcNAc proteome that responds to TG, we injected young adult mice with either saline or TG and performed mass spectrometry analysis for detection of O-GlcNAcylated peptides. This approach identified 506 unique peptides corresponding to 278 proteins that are O-GlcNAcylated. Of the 506 unique peptides, 85 peptides are elevated by > 1.5 fold in O-GlcNAcylation levels in response to TG. Using pathway analyses, we found TG-dependent enrichment of O-GlcNAcylated synaptic proteins, trafficking, Notch/Wnt signaling, HDAC signaling, and circadian clock proteins. Significant changes in the O-GlcNAcylation of DNAJC6/AUXI, and PICALM, proteins that are risk factors for PD and/or AD respectively, were detected. We compared our study with two key prior O-GlcNAc proteome studies using mouse cerebral tissue and human AD brains. Among those identified to be increased by TG, 15 are also identified to be increased in human AD brains compared to control, including those involved in cytoskeleton, autophagy, chromatin organization and mitochondrial dysfunction. These studies provide insights regarding neurodegenerative diseases therapeutic targets.
O-GlcNAc proteins:
TANC2, AMRA1, CAMP1, SKT, AGRIN, TTLL3, NHSL2, CTTB2, CCDC6, SHAN1, SYGP1, DPYL2, STXB1, CLOCK, NOTC2, VIAAT, CTND2, TPD53, REPS1, NLK, ACK1, SYUA, ATX2, PDLI1, ZFR, HCN1, BSN, TOM1, SYN1, GCR, EGR1, NFL, NFM, ATX1L, DERPC, KCC2A, CNTN1, HSPB1, MAP1B, G3P, ATF2, MTAP2, RS2, FOXK1, STAT3, AINX, EPB41, RFX1, LMNA, INPP, VATA, DVL1, CNBP, ATX1, NCAN, GOGA3, PTPA, GCP3, TB182, GMEB2, YTHD1, PI5PA, MRTFB, LIPA3, NACAM, TNIK, WNK1, NPTN, NEO1, S30BP, ZEP1, APOC2, EMAL1, RELCH, PRC2C, YETS2, FUBP2, QRIC1, LIMC1, DAB2P, ZEP2, AAK1, TNR6A, FCHO2, DRC1, SRBS2, GRM5, PACS2, OXR1, PHAR4, LIN54, MLIP, UNKL, SMG7, RBM27, CYFP2, SYNRG, SRC8, SKIL, NCOR1, LAMA5, HCFC1, P3C2A, SAP, APC, TOB1, AP180, FXR1, HS71A, LASP1, MAFK, M3K7, TAF6, ASPP1, SRBS1, DBNL, SH3G1, TLE4, IF4G2, MINT, ZYX, NUP62, OMGP, TFE3, SYN2, TBR1, RBL2, SBNO1, SLAI1, PKP4, SH3R1, JHD2C, ABLM3, ARMX2, LAR4B, HELZ, S23IP, RBM26, BCR, AHDC1, PAPD7, MFF, KMT2D, ERC2, NFRKB, WDFY3, GGYF2, TEX2, CNOT1, IF2A, PLPR3, PRC2B, C2CD5, TPPP, ATX2L, MAP6, NAV3, AUXI, RIMB2, AVL9, NU214, AP4E1, C2C2L, IF4G3, ZN598, SHAN2, LPP, MYPT2, PHIPL, TB10B, CCD40, ZC3HE, DLGP2, ZC21A, BAIP2, CLAP2, LIPA2, SRRM2, PAMR1, GEPH, YTHD3, POGZ, EPC2, SI1L1, RBM14, HYCC2, ANK2, CDAN1, SYNPO, VCIP1, TAB1, MEF2C, F193A, OGT1, EP400, EPN2, P66A, PDLI5, GTPBA, ZBT20, RTN1, BRD3, AGFG1, ABLM1, MRTFA, DC1L1, SPART, RFIP5, NUP35, WASF1, SC6A8, SGIP1, AGAP3, P66B, TAF9, WDR13, LRP5, UBAP2, BASP1, DCP1A, SYUB, TRFE, TRIM7, S12A6, GORS2, TAB2, EPN4, RNF34, ANR17, NECP1, FLIP1, ROA0, RBM33, TPD54, ODO2, DLGP1, FIP1, TM263, PLIN3, LNEBL, KC1D, NBEA, INP4A, RIMS2, RBP2, RTN3, NUDT3, ATR, ADRM1, FMN2, NCOA6, SON, ULK2, ADDA, MAGD1, MAP1A, GRM3, PCLO, GAB1, FBX6, NPAS3, GUAD, NCOR2, ATRN, NFAT5, DEMA, E41L3, SLIT3, CARM1, DYR1B, MECP2, E41L1, HDAC6
Species: Mus musculus
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Deracinois B, Camoin L, Lambert M, Boyer JB, Dupont E, Bastide B, Cieniewski-Bernard C. O-GlcNAcylation site mapping by (azide-alkyne) click chemistry and mass spectrometry following intensive fractionation of skeletal muscle cells proteins. Journal of proteomics 2018 186 30016717
Abstract:
The O-linked-N-acetyl-d-glucosaminylation (O-GlcNAcylation) modulates numerous aspects of cellular processes. Akin to phosphorylation, O-GlcNAcylation is highly dynamic, reversible, and responds rapidly to extracellular demand. Despite the absolute necessity to determine post-translational sites to fully understand the role of O-GlcNAcylation, it remains a high challenge for the major reason that unmodified proteins are in excess comparing to the O-GlcNAcylated ones. Based on a click chemistry approach, O-GlcNAcylated proteins were labelled with azido-GalNAc and coupled to agarose beads. The proteome extracted from C2C12 myotubes was submitted to an intensive fractionation prior to azide-alkyne click chemistry. This combination of fractionation and click chemistry is a powerful methodology to map O-GlcNAc sites; indeed, 342 proteins were identified through the identification of 620 peptides containing one or more O-GlcNAc sites. We localized O-GlcNAc sites on proteins involved in signalling pathways or in protein modification, as well as structural proteins. Considering the recent role of O-GlcNAcylation in the modulation of sarcomere morphometry and interaction between key structural protein, we focused on proteins involved in the cytoarchitecture of skeletal muscle cells. In particular, several O-GlcNAc sites were located into protein-protein interaction domains, suggesting that O-GlcNAcylation could be strongly involved in the organization and reorganization of sarcomere and myofibrils.
Species: Mus musculus
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Qin K, Zhu Y, Qin W, Gao J, Shao X, Wang YL, Zhou W, Wang C, Chen X. Quantitative Profiling of Protein O-GlcNAcylation Sites by an Isotope-Tagged Cleavable Linker. ACS chemical biology 2018 13(8) 30059200
Abstract:
Large-scale quantification of protein O-linked β- N-acetylglucosamine (O-GlcNAc) modification in a site-specific manner remains a key challenge in studying O-GlcNAc biology. Herein, we developed an isotope-tagged cleavable linker (isoTCL) strategy, which enabled isotopic labeling of O-GlcNAc through bioorthogonal conjugation of affinity tags. We demonstrated the application of the isoTCL in mapping and quantification of O-GlcNAcylation sites in HeLa cells. Furthermore, we investigated the O-GlcNAcylation sensitivity to the sugar donor by quantifying the levels of modification under different concentrations of the O-GlcNAc labeling probe in a site-specific manner. In addition, we applied isoTCL to compare the O-GlcNAcylation stoichiometry levels of more than 100 modification sites between placenta samples from male and female mice and confirmed site-specifically that female placenta has a higher O-GlcNAcylation than its male counterpart. The isoTCL platform provides a powerful tool for quantitative profiling of O-GlcNAc modification.
O-GlcNAc proteins:
A0A0A6YVU8, A0A1B0GSG7, RBM47, ZN335, A2A8N0, SBNO1, CNOT1, PHRF1, ZN462, TAGAP, D3YUK0, E9PUR0, E9PVW1, E9PWI7, PARP4, E9PZS2, E9Q2C0, NU153, E9Q616, BD1L1, E9Q732, ARHG5, E9Q7N9, E9Q842, E9Q9B4, E9Q9Q2, E9QA22, E9QAE1, F6Y6L6, F8VQ29, F8VQM5, J9JI28, PDLI1, SPT5H, TAF4, ARI1A, ABLM1, KMT2D, MYPT1, ZN609, SET1A, SYNEM, PUR4, TNC18, KDM6A, DPOD2, M3K7, TPD54, SYNJ1, ZN207, SRPK2, ACK1, SYUA, MYPT2, KIF1B, HBP1, OGA, VINEX, PLIN3, MAFK, BRD4, PDLI1, KDM6A, SRPK1, N4BP1, ANR17, NCOR1, CREG1, CRTAP, MYO1A, MTR1L, CREG1, TOX4, SUN1, M3K6, PSMG1, SC24B, CNOT4, ABL1, ABL1, EGFR, LAMC1, LMNA, GBA1, GCR, HSPB1, PPBT, RLA2, ITB1, K1C18, K2C8, SAP, CATL1, LAMB1, ENPL, BGLR, NFIC, VIME, SNRPA, ROA1, ATX1L, TGAP1, GLI2, HLAC, CATB, TAU, BIP, FINC, K2C8, TPR, MSH3, ENPL, PO2F1, ATF2, GNS, ZEP1, RS2, MUC1, JUNB, ATF7, CATD, SON, SERPH, NELFE, BIP, ROA2, CBL, IF4B, APC, ARNT, MAP4, TEAD1, RXRA, RXRB, RXRG, CLIP1, AIMP1, HXA11, ELF1, NU214, MP2K2, VATA, CUX1, PBX2, MLH1, STAT3, SSRB, KI67, STT3A, RFX5, LMNA, DPOD2, PAXI, CDK8, YLPM1, NU153, RBP2, TAF6, EMD, PPT1, FXR1, ICAL, AGFG1, NUP98, ATX1, ATN1, PTN5, AF17, DSRAD, AMRP, ACYP2, NU107, ACOT8, S26A1, TB182, YTHD1, ASXL1, PI5PA, RIN3, MRTFB, RL37, KCNA2, RALA, STIM1, PITX1, IF4G2, SRPK2, RENBP, COG7, WNK1, SERF2, RPTN, SPSY, DAB2, RBM10, HNRPU, SPTB2, FOXK2, EWS, MEF2A, SP2, CO7A1, S30BP, NUCB1, ENL, IF4G1, K1C17, TLE4, TOP1, SUH, CBG, ACK1, DEMA, AHNK, FOXO1, TROAP, BPTF, NFIA, ROA0, G3BP1, PABP4, ATM, PICAL, MAMD1, RIPK1, STIM1, MTMR1, CUL4B, ASPP2, KLF5, NFYC, CDK13, VEZF1, DSG2, TRI29, UBP2L, SRC8, PUM1, EPN4, RRP1B, NCOA6, DIP2A, MEF2D, NUMA1, R3HD1, KIF14, EBP, RCN1, KS6A1, RBMS2, TAF1C, NCOA2, SF01, JHD2C, MARE1, ELF2, TAB1, ZFHX3, ZYX, ADRM1, CCDC6, TAF9, STX1A, RFX7, QSER1, QRIC1, PRC2C, PBIP1, GSE1, TNR6A, CEAM5, Q3UKP4, COBL1, ARH40, SC31A, PEG3, SRBS2, Q3UU43, Q3UUE0, F91A1, ARBK2, Q497W2, Q4KL65, PHAR4, EPC2, CRTC2, BCORL, BRD10, TGO1, PRC2B, TOIP1, SPG17, SHRM1, ZN362, LRIF1, RHG21, UBAP2, RBM26, RPRD2, ZN318, NCOR1, LAMA5, HCFC1, P3C2A, SAP, AP180, MAFK, SPTB2, SH3G1, ZYX, TSH3, INADL, WAPL, KAZRN, SBNO1, ARID2, DYH17, SAM9L, CDK13, LAR4B, BICRL, RHG21, HELZ, TTLL5, PANX2, PKHG2, NIPBL, LIN54, F135A, RPRD2, IF4G1, SPIC, SCYL2, NFRKB, INT1, ZN182, UGGG1, MDEAS, ZC3HE, RICTR, FIP1, CRTC3, SAS6, MCAF1, BCOR, GGYF2, NU188, CO039, UBN2, HAKAI, ASXL2, SPT6H, DDX46, KDM3B, PRC2B, OOG2, ZIC5, NRK, POGZ, MAVS, CLAP1, EMSY, I2BP2, SRGP1, SH3R1, HUWE1, YTHD3, NU214, TMC5B, ZN598, TOPRS, SHAN2, Q80ZX0, ZNF18, Q810G1, BCL9L, LUZP1, PRSR1, DDX42, PALB2, P66A, GNS, LPP, TB10B, TGO1, Q8BIB6, ZN771, ZNT6, AAPK2, CNOT4, SP110, IFFO1, YTHD3, NCBP3, DEFI6, RBM14, CNOT2, CABS1, Q8C6L9, TCAL5, TAB1, SCYL2, ASPP2, PHC3, EPN2, PDLI5, I2BP1, RN135, AHNK2, NAV2, MISP, MGAP, ANKH1, PHAR4, XRN1, PELP1, Q8JZK6, Q8K0U8, AGFG1, TXD11, IL23R, ARHG6, SPART, SPICE, NUP93, CLASR, ZN786, SYNPO, FNBP4, ARFG1, ENAH, TNR6A, PHC3, SP20H, NAV1, VP37A, KMT2C, BD1L1, NUP35, STXB6, KNL1, TCAL3, MTSS1, SPART, NUP35, PUM2, STT3B, ALMS1, GEMI5, WIPF2, MAVS, UTP6, PI3R4, AMOT, P66B, STAG1, PCNP, LMO7, ATX2L, CSKI2, P66B, BBX, TITIN, HNMT, UBAP2, DCP1A, NRIF1, SMG7, RTF1, MAML1, ZN592, LAR4B, TAF4B, SHIP1, DDX17, RENT1, GPKOW, FUBP2, LPP, TTC28, PF21A, INT12, RCN3, CERS2, PDLI5, FUBP3, MY15B, ANCHR, CLP1L, Z512B, ZFR, EP400, NOL4L, RBM14, CIC, MED15, PIGS, DCR1C, SIN3A, MINT, EYA3, TEAD3, ATX2, RFC4, DHX58, ANX13, GORS2, TAB2, EPN4, ANR17, DPH2, WAC, DIDO1, YTHD1, AMRA1, TANC1, TXD12, F133B, RBM33, GPI8, Q9D2U0, ZC21B, FUND2, F162A, APMAP, Q9D809, FIP1, CNPY3, Q9DAV5, Q9DB24, ALG2, PLIN3, MYPT1, WWTR1, Q9EQC8, SALL1, RBP2, GILT, MFF, SP130, APC1, I2BPL, RBNS5, EPC1, ADNP, ZN106, TM245, CPVL, PTN23, WNK1, E41L1, ZHX3, ZN335, PKHG2, CCSE2, CQ10B, MLXIP, PKHA5, RC3H2, TAF9B, ZBT20, NCOA5, ZN532, APMAP, HYOU1, ADRM1, GIT2, BAG3, UBN1, PDLI7, DIAP3, RBM12, CARF, ETAA1, HXC10, TAB2, UGGG1, CDK12, ITSN2, CNOT2, TMEM9, DAPLE, NYAP2, KANL3, SON, LIMD1, KI21B, KI21A, PPIE, PCM1, GALK1, MRP5, SE1L1, LIMD1, TCF20, SUN2, AFF4, UBQL2, S30BP, NRBP, SIX4, TASOR, GMEB2, PARP4, NUP50, ZHX1, YETS2, HECD1, SCAF8, SRRM2, SCML2, S22AL, NCOR2, DEMA, POLH, R3HD2, ZN281, FBX7, RPGF2, IRS2, HYOU1, PRC2C, NCOR2, GMEB1, S23IP, SRPK3, SLFN1, VNN1, KLK4, SE1L1, RGS6, E41L1
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Alfaro JF, Gong CX, Monroe ME, Aldrich JT, Clauss TR, Purvine SO, Wang Z, Camp DG 2nd, Shabanowitz J, Stanley P, Hart GW, Hunt DF, Yang F, Smith RD. Tandem mass spectrometry identifies many mouse brain O-GlcNAcylated proteins including EGF domain-specific O-GlcNAc transferase targets. Proceedings of the National Academy of Sciences of the United States of America 2012 109(19) 22517741
Abstract:
O-linked N-acetylglucosamine (O-GlcNAc) is a reversible posttranslational modification of Ser and Thr residues on cytosolic and nuclear proteins of higher eukaryotes catalyzed by O-GlcNAc transferase (OGT). O-GlcNAc has recently been found on Notch1 extracellular domain catalyzed by EGF domain-specific OGT. Aberrant O-GlcNAc modification of brain proteins has been linked to Alzheimer's disease (AD). However, understanding specific functions of O-GlcNAcylation in AD has been impeded by the difficulty in characterization of O-GlcNAc sites on proteins. In this study, we modified a chemical/enzymatic photochemical cleavage approach for enriching O-GlcNAcylated peptides in samples containing ∼100 μg of tryptic peptides from mouse cerebrocortical brain tissue. A total of 274 O-GlcNAcylated proteins were identified. Of these, 168 were not previously known to be modified by O-GlcNAc. Overall, 458 O-GlcNAc sites in 195 proteins were identified. Many of the modified residues are either known phosphorylation sites or located proximal to known phosphorylation sites. These findings support the proposed regulatory cross-talk between O-GlcNAcylation and phosphorylation. This study produced the most comprehensive O-GlcNAc proteome of mammalian brain tissue with both protein identification and O-GlcNAc site assignment. Interestingly, we observed O-β-GlcNAc on EGF-like repeats in the extracellular domains of five membrane proteins, expanding the evidence for extracellular O-GlcNAcylation by the EGF domain-specific OGT. We also report a GlcNAc-β-1,3-Fuc-α-1-O-Thr modification on the EGF-like repeat of the versican core protein, a proposed substrate of Fringe β-1,3-N-acetylglucosaminyltransferases.
O-GlcNAc proteins:
ZEP3, CAMP1, FRPD1, SKT, DLGP4, DPYL2, STXB1, MAP2, NUMBL, M3K5, NOTC2, CTND2, CSK22, ACK1, SYUA, ATX2, ZFR, BSN, GCR, EGR1, NFL, NFM, RC3H2, MAMD1, ATX1L, DERPC, NCAM1, MAP1B, G3P, ATF2, MAP4, KCC2B, AIMP1, FOXK1, STAT3, AINX, NEDD4, RP3A, DVL1, GOGA3, FOXP1, TB182, GMEB2, PI5PA, MRTFB, DOCK4, ABI2, KCNJ3, NCOA1, RGRF2, TNIK, WNK1, G3BP2, MPRIP, XRN1, RLA2, S30BP, MARK3, ENAH, PGBM, CDK12, MA6D1, PHAR1, PSD3, NELL1, PRC2C, YETS2, FOXK2, WNK2, LIMC1, TNR6C, AGAP2, ZEP2, AAK1, TNR6A, CAMKV, PKHA7, GRIN1, FCHO2, GARL3, STOX2, UBN1, ABL2, CDV3, PHAR4, TAB3, NUFP2, UNKL, OSBP2, RBM27, CYFP2, TM1L2, ANR40, NACAD, SIN3A, NCOR1, LAMA5, NCOA2, AP180, RAI1, M3K7, TAF6, SRBS1, SH3G1, TLE4, MINT, ZYX, SF01, SYN2, TBR1, SBNO1, CRTC1, GIT1, SLAI1, PKP4, CDK13, RHG23, SH3R1, JHD2C, HECD1, ABLM3, ARMX2, LAR4B, RHG21, FBX41, RPRD2, WWC2, ZN532, BCR, DLGP3, NYAP1, GMIP, NFRKB, MAGI1, CNOT1, NU188, SMAP2, SPAG7, PRC2B, ATX2L, MAP6, MCAF1, PHF24, NAV3, AUXI, RERE, RIMB2, PUM1, NU214, KCMF1, EPN1, AGFG2, C2C2L, CNKR2, ZN598, SHAN2, MAST4, RHG32, MYPT2, TB10B, FRM4A, SP130, DLGP2, ZNT6, ABLM2, CLAP2, CNOT4, PAMR1, CREST, IFFO1, OSBL6, YTHD3, TM266, SI1L1, SH3R3, RBM14, CNOT2, ANK2, DIDO1, SYNPO, VCIP1, TAB1, SCYL2, ASPP2, F193A, OGT1, NAV1, SYNJ1, RPGF2, EP400, P66A, PDLI5, SCAM1, HS12A, AGFG1, I2BPL, PO121, ABLM1, SPART, RFIP5, CS047, SIR2, AMOT, CCG8, ZCH14, WDR13, UBAP2, NCOA5, FRS3, ZFN2B, BASP1, DCP1A, SRGP2, SRGP1, SYUB, CLIP1, UBXN1, GORS2, EPN4, RB6I2, ANR17, TXD12, NECP1, DLGP1, FIP1, F135B, TM263, PLIN3, MYPT1, CRIP2, TSC1, NBEA, RIMS2, ZN704, RBP2, RTN3, 4ET, ELF2, NUDT3, FMN2, NCOA6, SRCN1, ASAP1, RAD1, SON, PLEC, ULK2, ADDA, PCLO, HIPK2, SH2D3, YLPM1, RHG07, TEN1, NCOR2, COR1B, TNIP1, DEMA, E41L3, SYUG, APCL, MECP2, E41L1
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, 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, 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, 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, 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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Hahne H, Kuster B. Discovery of O-GlcNAc-6-phosphate modified proteins in large-scale phosphoproteomics data. Molecular & cellular proteomics : MCP 2012 11(10) 22826440
Abstract:
Phosphorylated O-GlcNAc is a novel post-translational modification that has so far only been found on the neuronal protein AP180 from the rat (Graham et al., J. Proteome Res. 2011, 10, 2725-2733). Upon collision induced dissociation, the modification generates a highly mass deficient fragment ion (m/z 284.0530) that can be used as a reporter for the identification of phosphorylated O-GlcNAc. Using a publically available mouse brain phosphoproteome data set, we employed our recently developed Oscore software to re-evaluate high resolution/high accuracy tandem mass spectra and discovered the modification on 23 peptides corresponding to 11 mouse proteins. The systematic analysis of 220 candidate phosphoGlcNAc tandem mass spectra as well as a synthetic standard enabled the dissection of the major phosphoGlcNAc fragmentation pathways, suggesting that the modification is O-GlcNAc-6-phosphate. We find that the classical O-GlcNAc modification often exists on the same peptides indicating that O-GlcNAc-6-phosphate may biosynthetically arise in two steps involving the O-GlcNAc transferase and a currently unknown kinase. Many of the identified proteins are involved in synaptic transmission and for Ca(2+)/calmodulin kinase IV, the O-GlcNAc-6-phosphate modification was found in the vicinity of two autophosphorylation sites required for full activation of the kinase suggesting a potential regulatory role for O-GlcNAc-6-phosphate. By re-analyzing mass spectrometric data from human embryonic and induced pluripotent stem cells, our study also identified Zinc finger protein 462 (ZNF462) as the first human O-GlcNAc-6-phosphate modified protein. Collectively, the data suggests that O-GlcNAc-6-phosphate is a general post-translation modification of mammalian proteins with a variety of possible cellular functions.
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Vosseller K, Trinidad JC, Chalkley RJ, Specht CG, Thalhammer A, Lynn AJ, Snedecor JO, Guan S, Medzihradszky KF, Maltby DA, Schoepfer R, Burlingame AL. O-linked N-acetylglucosamine proteomics of postsynaptic density preparations using lectin weak affinity chromatography and mass spectrometry. Molecular & cellular proteomics : MCP 2006 5(5) 16452088
Abstract:
O-GlcNAc is a widespread dynamic carbohydrate modification of cytosolic and nuclear proteins with features analogous to phosphorylation. O-GlcNAc acts critically in many cellular processes, including signal transduction, protein degradation, and regulation of gene expression. However, the study of its specific regulatory functions has been limited by difficulties in mapping sites of O-GlcNAc modification. We report methods for direct enrichment and identification of in vivo O-GlcNAc-modified peptides through lectin weak affinity chromatography (LWAC) and mass spectrometry. The effectiveness of this strategy on complex peptide mixtures was demonstrated through enrichment of 145 unique O-GlcNAc-modified peptides from a postsynaptic density preparation. 65 of these O-GlcNAc-modified peptides were sequenced and belonged to proteins with diverse functions in synaptic transmission. Beta-elimination/Michael addition, MS(3) on O-GlcNAc neutral loss ions, and electron capture dissociation were shown to facilitate analysis of O-GlcNAc-modified peptides/sites from lectin weak affinity chromatography enriched postsynaptic density samples. Bassoon and Piccolo, proteins critical to synapse assembly and vesicle docking, were extensively modified by O-GlcNAc. In some cases, O-GlcNAc was mapped to peptides previously identified as phosphorylated, indicating potential interplay between these modifications. Shared substrate amino acid context was apparent in subsets of O-GlcNAc-modified peptides, including "PVST" and a novel "TTA" motif (two hydroxyl-containing amino acids adjacent to an alanine). The results suggest specific roles for O-GlcNAc modification in synaptic transmission, establish a basis for site-specific regulatory studies, and provide methods that will facilitate O-GlcNAc proteome analysis across a wide variety of cells and tissues.
O-GlcNAc proteins:
SKT, SYGP1, ANK3, CTND2, BSN, SYN1, NFL, NFM, AINX, MRTFB, SRBS1, TPPP, SHAN2, SYNPO, PCLO
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