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Wong YK, Wang J, Lim TK, Lin Q, Yap CT, Shen HM. O-GlcNAcylation promotes fatty acid synthase activity under nutritional stress as a pro-survival mechanism in cancer cells. Proteomics 2022 35083852
Abstract:
Protein O-GlcNAcylation is a specific form of protein glycosylation that targets a wide range of proteins with important functions. O-GlcNAcylation is known to be deregulated in cancer and has been linked to multiple aspects of cancer pathology. Despite its ubiquity and importance, the current understanding of the role of O-GlcNAcylation in the stress response remains limited. In this study, we performed a quantitative chemical proteomics-based open study of the O-GlcNAcome in HeLa cells, and identified 163 differentially-glycosylated proteins under starvation, involving multiple metabolic pathways. Among them, fatty acid metabolism was found to be targeted and subsequent analysis confirmed that fatty acid synthase (FASN) is O-GlcNAcylated. O-GlcNAcylation led to enhanced de novo fatty acid synthesis activity, and fatty acids contributed to the cytoprotective effects of O-GlcNAcylation under starvation. Moreover, dual inhibition of O-GlcNAcylation and FASN displayed a strong synergistic effect in vitro in inducing cell death in cancer cells. Together, the results from this study provide novel insights into the role of O-GlcNAcylation in the nutritional stress response and suggest the potential of combining inhibition of O-GlcNAcylation and fatty acid synthesis in cancer therapy. This article is protected by copyright. All rights reserved.
O-GlcNAc proteins:
RUXGL, ADAS, DX39A, MYO1C, IPO5, PESC, NOP56, DDX3X, SCD, MGST3, HNRDL, XPO1, SURF4, OGT1, PPM1G, MOT4, DHX15, CYB5B, SERA, HNRPR, BUB3, ACTN4, MYO1B, GANP, HNRPQ, NDUS7, MPU1, H2AY, FLNB, SC22B, SF3B1, U520, UTP20, NU155, ATP5H, RL1D1, MTA2, RTN3, VAPB, IPO7, ACSL3, BAG2, TOM40, LDHA, DHE3, AATM, PGK1, ASSY, LMNA, TFR1, ALDOA, K2C1, G3P, HSPB1, RPN1, AT1A1, ADT2, PCCA, RLA1, RLA0, LA, K1C18, K2C8, ATPB, ENOA, NPM, TPM3, LDHB, PDIA1, ANXA2, TBB5, TRY1, PROF1, SYEP, HS90A, HNRPC, DAF, 4F2, HS90B, ODPA, RU17, VIME, RS17, K2C7, GNAI3, RSSA, LEG1, ROA1, PARP1, PRS56, HS71B, ODP2, THIO, MGST1, CH60, BIP, HSP7C, GTR1, TOP2A, PYC, PABP1, PCNA, ADT3, IMDH2, KCRU, XRCC6, XRCC5, EF2, K1C10, K2C5, PDIA4, PLST, ETFA, MIF, KPYM, ENPL, HNRPL, PLAK, EZRI, NDKA, RS2, DESP, H13, NCPR, AT2A2, DDX5, TCPA, PTN1, ARF4, RL7, RL17, NUCL, GSTM3, FLNA, FBRL, PUR6, UBA1, ROA2, QCR2, SFPQ, PPIB, RS3, SAHH, COF1, MCM3, RS12, ATPA, U2AF2, RL13, S10A4, PTBP1, SYVC, EF1G, STOM, RL10, APEX1, PYR1, CALX, TKT, ERP29, PRDX6, PRDX5, PRDX3, RL12, PDIA3, CPSM, HNRH1, STIP1, L1CAM, PRDX2, P5CR1, DUT, MCM7, GLYM, HSP74, PHB1, RL22, MYH9, SOAT1, DEK, K22E, RL4, LONM, NUP62, GRP75, IF4A3, RL3, RL13A, ARL1, STAT3, MDHM, RFC3, ECHA, SYIC, LAP2A, LPPRC, MATR3, MSH2, GPDM, VDAC2, KI67, BAG6, RL27A, RL5, RS9, STT3A, CAPZB, SYQ, RL29, AT5G3, TCPE, RL34, FAS, TCPG, EFTU, ACADV, TMEDA, NU153, RBP2, CPT1A, SERPH, RL14, TCPQ, TCPD, FXR1, RAB5C, RAB7A, HCFC1, ROA3, 6PGD, HNRPM, IMA1, HNRPF, MSH6, TXTP, ACLY, COPA, MOT1, SYRC, KAD2, P5CS, XPO2, TERA, NP1L1, DSRAD, ATPK, TMM33, TPIS, MYL6, IF4A1, RS20, S10AA, RAP1B, RL15, RL37A, HNRPK, RS8, RS16, 1433E, RS14, RS23, RS11, RUXE, RL7A, RS4X, RS6, H4, RAB1A, RAN, RL23, RS25, RS26, RL10A, RL11, RL8, PPIA, RS27A, RSMN, RACK1, ACTG, UBC9, TBA1B, TBB4B, GTF2I, TCPB, PRKDC, RL24, ARF5, RL19, SRSF3, MPCP, CLH1, HNRPU, SPTB2, EXOSX, RL18A, RL6, IF4G1, K1C17, PRDX1, RL18, C1QBP, KHDR1, DHX9, NCBP1, AHNK, NU160, SF3A3, ILF3, ACACA, PRDX4, CBX3, TIF1B, SPTN1, HNRPD, SAFB2, TTL12, CAPR1, ITPR1, RRP1B, GANAB, LBR, GOGB1, IMB1, NUMA1, SUZ12, U5S1, RRS1, PDIA6, PLEC, TEBP, NONO, PCBP1, PCBP2, DHC24, SF3B3, SF3A1, TRAM1, ELAV1, AAAT, RBBP7, H31T, PDS5A, TSR1, IF2GL, RRP12, NU188, HP1B3, EF1A3, PPR18, PRP8, C1TM, DHX30, CAND1, MISP, SPB1, PELP1, RDH10, CCAR2, TXND5, STT3B, BRX1, PO210, GEMI5, RT27, HS105, GCN1, NU205, AKAP1, AN32B, RBP56, DDX17, FUBP2, TNPO1, UBP7, UTP4, LRC59, PGAM5, FUBP3, MBOA7, MCCA, WRIP1, UHRF1, POP1, HCD2, ROAA, TM9S2, TCPH, ANM1, H2B1L, RNZ2, MEP50, MBB1A, ESYT1, H2AJ, GNL3, HDHD5, GTPB4, API5, RPF2, SFXN1, RDH14, ABCB6, DDX21, MDN1, DCA13, ATD3A, DDX18, MIC19, TEX10, TECR, MYOF, THYN1, HACD3, RRBP1, ABC3B, RLP24, ACINU, OGDHL, COR1C, PRP19, SSRG, TRI33, EIF3L, RUVB1, VDAC3, PDIP2, NOP58, SF3B6, RTCB, RL36, LAS1L, SRPRB, COPG1, MTCH2, CEPT1, ZNT1
Species: Homo sapiens
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Ramirez DH, Yang B, D'Souza AK, Shen D, Woo CM. Truncation of the TPR domain of OGT alters substrate and glycosite selection. Analytical and bioanalytical chemistry 2021 34725712
Abstract:
O-GlcNAc transferase (OGT) is an essential enzyme that installs O-linked N-acetylglucosamine (O-GlcNAc) to thousands of protein substrates. OGT and its isoforms select from these substrates through the tetratricopeptide repeat (TPR) domain, yet the impact of truncations to the TPR domain on substrate and glycosite selection is unresolved. Here, we report the effects of iterative truncations to the TPR domain of OGT on substrate and glycosite selection with the model protein GFP-JunB and the surrounding O-GlcNAc proteome in U2OS cells. Iterative truncation of the TPR domain of OGT maintains glycosyltransferase activity but alters subcellular localization of OGT in cells. The glycoproteome and glycosites modified by four OGT TPR isoforms were examined on the whole proteome and a single target protein, GFP-JunB. We found the greatest changes in O-GlcNAc on proteins associated with mRNA splicing processes and that the first four TPRs of the canonical nucleocytoplasmic OGT had the broadest substrate scope. Subsequent glycosite analysis revealed that alteration to the last four TPRs corresponded to the greatest shift in the resulting O-GlcNAc consensus sequence. This dataset provides a foundation to analyze how perturbations to the TPR domain and expression of OGT isoforms affect the glycosylation of substrates, which will be critical for future efforts in protein engineering of OGT, the biology of OGT isoforms, and diseases associated with the TPR domain of OGT.
O-GlcNAc proteins:
UBA6, SBNO1, CNOT1, SMHD1, ADAS, DX39A, BACH, MYO1C, PSD11, PSD12, TAF4, CLIC1, EIF3F, IPO5, DNM1L, AGRIN, PLOD2, IMA4, NOP56, DDX3X, PDXK, ANM5, TCRG1, PSA7, SCAM3, HAT1, HGS, MYPT1, HNRDL, XPO1, PUR4, NPC1, SCAM2, ARC1B, ARPC2, ARPC3, RPAC1, GNPAT, ZN185, SURF4, OGT1, PPM1G, EIF3D, EIF3H, P4HA2, MAGB2, NUP42, DHX15, MCES, SERA, PSMD3, PAPS1, ZW10, HNRPR, TXNL1, E41L2, XPOT, TIM44, PLRG1, ZN207, GET3, BUB3, ACTN4, AP1G1, SNG1, SNG2, SYNC, MYO1B, NRDC, CALU, EDIL3, SAHH2, DHX16, SMCA5, KDM1A, OGA, HNRPQ, PLOD3, DIAP1, TSN3, PLIN3, CTND1, MAGC1, USO1, DKC1, IF2P, DNJA2, WDR1, CPNE3, T22D2, ANR17, H2AY, FLNB, CISY, SC22B, PR40A, ERLN1, SF3B1, CSDE1, U520, NU155, EIF3G, FACE1, IDHC, ATRN, STAM2, PRAF3, FLOT1, RL1D1, WFS1, MTA2, TOX4, SC24D, SUN1, FRYL, NFAT5, GLSK, SC31A, UBR5, LC7L3, FKBP9, SMC2, IPO7, AHSA1, SGPL1, SC24B, ACSL3, CDS2, AP2A1, BAG2, AIFM1, FADS2, CLPT1, TOM40, ACL6A, LDHA, COX2, PNPH, AATM, PGK1, ASSY, FOS, LMNA, FINC, TFR1, NU4M, NU5M, GLCM, FUCO, ALDOA, ANXA1, OAT, TBB4A, G3P, CPNS1, HSPB1, TYSY, RPN1, RPN2, GNAI2, AT1A1, AT1B1, ALDH2, ADT2, PCCA, IF2A, RLA2, RLA0, LA, ITB1, ATPB, IF4E, ENOA, G6PI, NPM, ITAV, HYEP, LDHB, PDIA1, H10, CATD, ANXA2, CAN1, TBB5, TRY1, SAP, PROF1, SYEP, CATB, HS90A, HNRPC, LAMB1, YES, FUMH, TSP1, ANXA6, MDR1, 4F2, PFKAM, HS90B, SRPRA, ASNS, ODPA, RU17, GNAI3, ANXA5, RSSA, CD63, SNRPA, GSTP1, LEG1, CN37, DLDH, ROA1, PARP1, LKHA4, ALDOC, GPHRB, HS71B, LYAG, RRAS, H14, ODP2, THIO, ESTD, CH60, CLUS, BIP, LAMC1, PPAL, HSP7C, GTR1, GTR3, ODPB, PYGB, LAMP1, TOP1, TOP2A, G6PD, PYC, C1TC, MPRI, ADHX, PABP1, PCNA, HARS1, IMDH2, TPR, KCRB, ACTN1, PEPD, XRCC6, XRCC5, LAMP2, RINI, EF2, PDIA4, P4HA1, TCTP, ACPH, ETFA, GLU2B, FPPS, KPYM, ENPL, IDE, HNRPL, SYDC, ALDR, B4GT1, EZRI, FOSL2, NDKA, GNS, RS2, RFA2, BGAL, H12, AT2A2, FAAA, AATC, JUNB, ITA2, CAN2, PYRG1, DDX5, PFKAL, PRS6A, TCPA, RL35A, ARF4, RL7, VINC, SON, RL17, PGAM1, DNLI1, PLCG1, NUCL, HXK1, RPB3, E2AK2, TFE3, SPEE, IF2B, ANXA7, PSB1, MPRD, LMNB1, VATB2, FLNA, VDAC1, TGM2, FBRL, PUR2, PUR6, UBA1, NDKB, ADRO, ROA2, RFX1, QCR2, SFPQ, PPIB, SYWC, RS3, SAHH, COF1, IF4B, PPAC, RPB1, MCM3, RS12, DNJB1, ATPA, PSA1, PSA2, PSA3, PSA4, ITA3, MOES, DDX6, DNMT1, U2AF2, RL13, PTBP1, SYTC, SYVC, EF1G, STOM, RL10, RFA1, APEX1, CD82, PYR1, CALR, MAP4, CALX, PSB8, PSA5, PSB4, PSB6, PSB5, DPOD1, TEAD1, MK01, AMPL, IMPA1, EPHA2, TKT, EF1D, PRDX6, BLVRB, PRDX5, PRDX3, RL12, ECHM, PEBP1, PDIA3, 2AAA, CDC27, PURA2, AMRP, PUR8, CLIP1, SL7A1, RPB2, SDHA, GDIA, METK2, DNJA1, QCR1, PUR9, HNRH3, HNRH1, 1433B, 1433S, STIP1, PRDX2, RL9, KINH, MRP1, MCM4, MCM5, MCM7, GLYM, HSP74, CTNA1, CTNB1, PHB1, RADI, RFC4, RL22, FBN2, GDE, MYH9, MYH10, COPB2, SOAT1, ADDA, BASI, FUS, NU214, PRS7, MP2K2, ATPG, HEM6, RL4, PGM1, ODO2, SRP14, NUP62, FDFT, TAGL2, TALDO, RBMX, VKGC, VATA, GRP75, IF4A3, RS19, RL3, OST48, AN32A, CAP2, TCPZ, RL13A, STAT3, MDHC, MDHM, ECHA, IF2G, KDM5C, GARS, SYIC, STAT1, CASP3, LPPRC, SATT, LIS1, MUC18, MATR3, MSH2, MAGA4, RANG, NAMPT, PRS6B, PPIC, VDAC2, UBP5, KI67, RAGP1, RECQ1, NOP2, CRKL, BAG6, NSF, RL27A, RL5, RL21, RL28, RS9, RS5, MAP1B, UTRN, IQGA1, STT3A, CAPZB, SYQ, UCRI, PPCE, COPD, LSS, CD151, PSMD8, TCPE, NEST, HSP13, PIPNB, PAXI, AL9A1, RL34, LMAN1, NASP, FAS, TCPG, EFTU, AL7A1, SYAC, SYCC, SYSC, PRI2, PSB3, PSB2, MCM2, ACADV, YLPM1, TMEDA, RBM25, NU153, RBP2, NDUV1, GSK3A, TAF6, GUAA, GDIB, EMD, SERPH, VASP, TCPQ, TCPD, ANX11, PAPOA, FXR1, RAB5C, RAB7A, RT29, SMCA4, BAP31, HCFC1, DHB4, HDGF, ROA3, 6PGD, HNRPM, IMA1, GDIR1, AGFG1, HNRPF, MSH6, RBM5, SPSY, CAZA1, NUP98, BIEA, PPP5, ACLY, MAP11, COPB, COPA, SC5A3, SMTN, MOT1, IST1, SC24C, SYRC, SYYC, UBP14, BCAT1, AT1B3, RD23B, P5CS, IF5, S12A2, XPO2, TERA, ECHB, AFAD, NP1L1, DSRAD, SEC13, PSA, HNRH2, EIF3B, ATPK, SYMC, IF6, CTBP2, TMM33, GEMI4, CORO7, NU107, ARPC4, TPIS, EIF3E, PP4C, IF4A1, PSA6, CDC42, DEST, GMFB, SRP54, RAB10, UBC12, ARP3, ARP2, ABCE1, RAP2B, RS3A, RL15, RL37A, S61A1, DAD1, NPC2, HNRPK, 1433G, RS7, PRS4, PRS8, RS8, RS15A, RS16, 1433E, RS14, RS23, RS13, RS11, SMD2, SMD3, PRS10, RL7A, ERF1, CNBP, RS4X, PP2AB, RS6, H4, RAB1A, RAN, RL23, RS25, RS28, RL30, RL31, RL10A, RL32, RL11, RL8, PPIA, TRA2B, AP2B1, 1433Z, IF5A1, RACK1, YBOX1, UB2L3, TBA4A, IF4G2, GTF2I, TCPB, PRKDC, RL24, SRSF3, FOXK1, DAB2, RBM10, MPCP, VIGLN, CLH1, FKBP3, HNRPU, U2AF1, SPTB2, AMPD2, CAP1, HMCS1, LAT1, EXOSX, PFKAP, EWS, PLCB3, ODO1, RL18A, MP2K1, FKBP4, PLOD1, RL6, TOP2B, DYST, KMT2A, LMNB2, CEBPZ, TF65, IF4G1, LGUL, 1433F, DYN1, EF1A2, PTN11, PUR1, GFPT1, EXOS9, SUH, GABPA, PRDX1, RL18, C1QBP, CKAP4, KHDR1, LRP1, SRSF1, PP2BA, DHX9, GOGA2, LG3BP, CD47, SSRP1, NSUN2, NCBP1, EP300, AHNK, MGAT2, GALT2, AP1B1, MPPA, SCRN1, NU160, SCAP, TBL3, TF3C1, ASPH, TROP, BPTF, AIMP1, ILF2, ILF3, LMAN2, TRAP1, FLII, ACACA, CSN1, MTAP, EI2BE, TADBP, ROA0, PRDX4, PSMD2, SRSF6, TIF1B, DHRS2, G3BP1, MTA1, EIF3I, UB2V1, DC1I2, NNTM, TCOF, TMED1, VPP3, PICAL, RIPK1, CUL2, CUL4A, CUL4B, FCL, MOGS, CD166, SPTN1, DX39B, BLMH, CKAP5, COTL1, HNRPD, SCRB2, EIF3A, UBP2L, SCRIB, FHL2, DPYL3, DCTN1, DYHC1, SRC8, FLOT2, TRI25, FLNC, GALE, CAPR1, RBM39, MCM6, TRIPC, PUM1, EPN4, RRP5, BMS1, UBP10, GANAB, LBR, MVP, MEF2D, CHD4, LASP1, GPNMB, ZN638, IMB1, NUMA1, CND2, SPCS2, PSMD6, ABRX2, SEPT2, CND1, U5S1, SYK, WDR43, PDIA6, PA1B3, IPYR, TEBP, NONO, PWP2, RCN1, L2GL1, TMED2, PCBP1, PCBP2, SF3B3, SC23A, SF3A1, TSN, SF01, PCH2, MED1, MARE1, ELAV1, NSDHL, TAB1, AAAT, MLF2, VAS1, ZYX, SEPT7, ADRM1, CCDC6, UAP1, PSMD5, PKN2, DDB1, DPYL2, KCC4, SRSF7, DREB, NRF1, FSCN1, IF16, PCKGM, UPP1, UGPA, TRXR1, HNRL2, INF2, PDS5A, QSER1, QRIC1, SMU1, P3H1, K2C71, TIM50, GXLT1, TB10B, SNUT2, HERC4, P4R3B, EOGT, CE170, UBR4, SKT, UBAP2, RBM26, RPRD2, ZMYM4, TWF2, LIN54, RHBD2, MBOA5, EDC4, PRP8, SCYL2, NFRKB, TTC37, NCEH1, BRAT1, ZC3HE, C1TM, SBSN, CREL2, PACS1, GGYF2, SRCAP, TMTC3, IKIP, SPT6H, SND1, DDX46, BZW1, DHX30, EIF3M, CYFP1, KDM3B, RIR2B, ERMP1, ZCCHV, NUP54, POGZ, MYH14, CLAP1, EMSY, SH3R1, HUWE1, TMED4, SYVN1, ZN598, PHLB1, LUZP1, CAND1, TSYL5, EZHIP, CARM1, DDX42, P66A, C2CD5, I2BP1, RB6I2, PLD3, P3H3, WDR75, Z3H7A, ANKH1, CCAR1, DJC10, SMAP1, SPART, RPTOR, NUP93, ZN687, SYNPO, FNBP4, CPSF7, EMC1, ENAH, S43A3, GT251, SUMF2, PGLT1, TXND5, PAIRB, LS14A, ABCF1, FBX22, NEUA, CADM4, ATLA2, PLBL2, WDR36, SMRC2, NPL4, S35B2, UBA3, TBC15, CIP2A, STT3B, PNPT1, HM13, DTX3L, PO210, GEMI5, PARD3, IPO4, SCRB1, RAB2B, NU133, PDC6I, S20A1, ATX2L, PALLD, DDX1, GBF1, NICA, TM9S4, HS105, GCN1, PRP16, NU205, PXDN, TFG, ARC1A, HDAC2, CBP, SYMPK, DDX17, CELF1, UFD1, GSLG1, RENT1, TNPO1, GLMN, USP9X, UBP7, SCAM4, SMCE1, MYDGF, PIGT, NCLN, EXOC4, FERM2, FUBP1, FKB10, APH1A, PPWD1, AP2M1, RCN3, ELP4, SEH1, DNJA3, CYFP2, PGM2, PDLI5, ERO1A, FUBP3, ITCH, TMX3, CNDP2, ZFR, EP400, SNX27, PRRC1, ZN512, MBOA7, DOCK7, ARAP1, IPO9, RBM14, NED4L, VPS35, CIC, MED15, EFGM, MCCA, MYADM, SIN3A, MINT, PNKP, NIBA2, TBCB, PSB7, CNN2, PSMD1, EYA3, SORT, NUP88, P2RX4, DNJC7, PHB2, KIF2C, ATX2, HCD2, ROAA, NP1L4, ACON, TM9S2, S29A1, TS101, TCPH, ANM1, CND3, MBB1A, COR1B, GCP2, ESYT1, DIDO1, MCMBP, TBCD, TBB6, RPC3, HNRL1, HTAI2, TMED9, NUP58, SFXN3, OSB10, NAA15, S12A9, SRRT, EIF2A, WDR11, FTO, TTYH3, WDR12, YIPF3, PITH1, PAIP1, NAT10, XRN2, TOLIP, SP130, BRD8, DDX47, MAGT1, RAB1B, LMA2L, I2BPL, GHITM, TMX1, PTN23, OFUT1, PIGU, WNK1, AMPB, HEAT1, NOL6, WDR26, AT133, ACAD9, GORS2, MARH7, SFXN1, PKHA5, XPO5, MYG1, EMAL4, TM9S3, APMAP, ARFG3, RTN4, ANLN, XPP1, PDLI7, DDX21, EI2BG, MBNL1, HEBP1, SERC1, F1142, SYFB, SYIM, SMC4, OLA1, RBM12, T106B, CYRIB, DCA13, CC50A, SEP11, FANCI, ARL8B, DDX18, TM160, MIO, CARF, DPP3, RM39, UGGG1, ERAP1, HPBP1, MAT2B, MYOF, ITSN2, HACD3, SEP10, RCC2, DIP2B, CT2NL, RRBP1, SYLC, RBM27, SUCB1, MRC2, DHCR7, DJB11, SAE2, NXF1, SUN2, SRP68, SEPT9, UBQL2, PCYOX, CEIP2, S30BP, MED13, PUF60, NRBP, VATH, IPO11, XPO7, BAZ2A, GGT7, NAGK, DBNL, CDC23, STML2, PARP4, NUDT5, TF3C4, ACINU, RAB21, DNPEP, ASAP1, MRTFB, MED23, HECD1, PKCB1, COR1C, MYO6, PRP19, MAGD2, PSD13, MINP1, NOVA2, WDR3, S12A4, MACF1, SCAF8, TRI33, SMAG1, XCT, SRRM2, PA2G4, SMC3, RUVB2, EIF3L, PLAP, RUVB1, VDAC3, ERGI3, SC5A6, DRG1, NCKP1, AT11B, E41L3, CHSP1, NOP58, ZN281, SYYM, TMX2, SHLB1, SBDS, TMED7, STRAP, RTCB, FBX7, RBGP1, NOC2L, TLN1, DCAF1, HYOU1, PRC2C, YTHD2, SP16H, TNPO3, MAGD1, SNX8, TRUA, NPTN, S12A7, COPG1, BIG1, BZW2, DC1L1, IF2B2, ZNT1, S4A7, ZHX2, S23IP
Species: Homo sapiens
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Ramirez DH, Aonbangkhen C, Wu HY, Naftaly JA, Tang S, O'Meara TR, Woo CM. Engineering a Proximity-Directed O-GlcNAc Transferase for Selective Protein O-GlcNAcylation in Cells. ACS chemical biology 2020 15(4) 32119511
Abstract:
O-Linked β-N-acetylglucosamine (O-GlcNAc) is a monosaccharide that plays an essential role in cellular signaling throughout the nucleocytoplasmic proteome of eukaryotic cells. Strategies for selectively increasing O-GlcNAc levels on a target protein in cells would accelerate studies of this essential modification. Here, we report a generalizable strategy for introducing O-GlcNAc into selected target proteins in cells using a nanobody as a proximity-directing agent fused to O-GlcNAc transferase (OGT). Fusion of a nanobody that recognizes GFP (nGFP) or a nanobody that recognizes the four-amino acid sequence EPEA (nEPEA) to OGT yielded nanobody-OGT constructs that selectively delivered O-GlcNAc to a series of tagged target proteins (e.g., JunB, cJun, and Nup62). Truncation of the tetratricopeptide repeat domain as in OGT(4) increased selectivity for the target protein through the nanobody by reducing global elevation of O-GlcNAc levels in the cell. Quantitative chemical proteomics confirmed the increase in O-GlcNAc to the target protein by nanobody-OGT(4). Glycoproteomics revealed that nanobody-OGT(4) or full-length OGT produced a similar glycosite profile on the target protein JunB and Nup62. Finally, we demonstrate the ability to selectively target endogenous α-synuclein for O-GlcNAcylation in HEK293T cells. These first proximity-directed OGT constructs provide a flexible strategy for targeting additional proteins and a template for further engineering of OGT and the O-GlcNAc proteome in the future. The use of a nanobody to redirect OGT substrate selection for glycosylation of desired proteins in cells may further constitute a generalizable strategy for controlling a broader array of post-translational modifications in cells.
O-GlcNAc proteins:
SBNO1, CNOT1, P121C, DX39A, GTPB1, AP3B1, PGRC1, TAF4, EIF3F, IPO5, IF2B3, NOP56, DDX3X, ARI1A, IRS4, ANM5, TCRG1, PSA7, HGS, MYPT1, HNRDL, XPO1, SET1A, PUR4, NPC1, TIF1A, NKRF, OGT1, PPM1G, EIF3D, EIF3H, DHX15, SERA, HNRPR, IF4G3, E41L2, ZN207, BUB3, ACTN4, HTSF1, AP1G1, SYNC, AKAP8, CALU, SMCA5, JIP4, OGA, HNRPQ, DIAP1, TSN3, SNX2, DKC1, CLAP2, CPNE3, PHF2, ANR17, H2AY, FLNB, NCOR1, CISY, PR40A, SF3B1, CSDE1, U520, EIF3G, PRAF3, SRP72, MTA2, TOX4, SC24D, SC31A, SCAF4, ZRAB2, LC7L3, VAPB, IPO7, SC24B, ACSL3, AP2A1, AIFM1, LDHA, COX2, HPRT, AATM, PGK1, LMNA, TFR1, ALDOA, OAT, G3P, RPN1, RPN2, AT1A1, ADT2, PCCA, IF2A, RLA0, ITB1, ATPB, ENOA, PYGL, G6PI, NPM, LDHB, PDIA1, H10, TBB5, HEXB, PROF1, SYEP, HS90A, HNRPC, 4F2, HS90B, ASNS, ODPA, RU17, RSSA, SNRPA, GSTP1, HMGB1, DLDH, ROA1, PARP1, LKHA4, HS71B, H14, ODP2, THIO, CH60, BIP, HSP7C, EPB41, ODPB, LAMP1, ACADM, TOP1, TOP2A, PYC, C1TC, MPRI, PRPS2, PABP1, PCNA, HARS1, IMDH2, TPR, KCRB, XRCC6, XRCC5, EF2, PDIA4, PLST, GLU2B, KPYM, ENPL, PO2F1, HNRPL, SYDC, PLAK, ALDR, EZRI, GNS, RS2, CREB1, H12, AT2A2, JUNB, PYRG1, DDX5, PRS6A, TCPA, RL35A, RL7, VINC, SON, RCC1, NUCL, HXK1, E2AK2, SPEE, IF2B, ANXA7, LMNB1, FLNA, VDAC1, FBRL, PUR2, PUR6, UBA1, NDKB, ROA2, RFX1, TCEA1, SFPQ, PPIB, RS3, NFYA, SAHH, COF1, IF4B, EF1B, MCM3, BRD2, ATPA, PSA1, PSA3, PSA4, PAX6, U2AF2, RL13, PTBP1, SYTC, SYVC, EF1G, RFA1, APEX1, PYR1, CALR, MAP4, CALX, PSB5, TKT, PRDX6, PRDX5, PRDX3, RL12, PEBP1, PDIA3, 2AAA, CDC27, AMRP, SDHA, QCR1, PUR9, HNRH1, STIP1, PRDX2, RL9, CSTF2, MCM4, MCM5, MCM7, GLYM, HSP74, PHB1, MYH9, COPB2, ADDA, BASI, FUS, NU214, DEK, MP2K2, ATPG, RL4, SRP14, NUP62, RBMX, GRP75, IF4A3, RS19, RL3, TXLNA, TCPZ, MDHC, MDHM, ECHA, IF2G, GARS, SYIC, LAP2A, LAP2B, MTREX, RS27, LPPRC, MATR3, RANG, VDAC2, UBP5, KI67, RAGP1, NOP2, CRKL, BAG6, RL27A, RL5, RL21, RL28, RS9, STT3A, COPD, PRC2A, TCPE, AL9A1, RL34, NASP, FAS, TCPG, EFTU, SYAC, SYSC, PSB3, MCM2, YLPM1, TMEDA, RBM25, NU153, RBP2, GSK3A, TAF6, GUAA, MRE11, GDIB, EMD, F10A1, LRBA, RL14, TCPQ, TCPD, ANX11, PAPOA, RAB7A, SMCA4, HCFC1, DHB4, ROA3, 6PGD, HNRPM, IMA1, AGFG1, HNRPF, MSH6, RBM5, NUP98, ACLY, COPB, COPA, MOT1, SC24C, SYRC, SYYC, AT1B3, RD23B, P5CS, IF5, XPO2, TERA, AFAD, DSRAD, PSA, SYMC, CTBP2, NU107, TPIS, ACTB, IF4A1, PSA6, ARF3, ABCE1, RAP1B, RS3A, RL26, RL15, S61A1, HNRPK, RS7, RS8, 1433E, RS14, RS23, RS11, SMD1, RL7A, RS4X, H4, RAN, RL23, GBB2, RL10A, RL11, RL8, PPIA, RL40, TRA2B, AP2B1, IF5A1, RACK1, YBOX1, EF1A1, TBB4B, CSK21, IF4G2, GTF2I, TCPB, PRKDC, RL24, RL19, SRSF3, FOXK1, RBM10, MPCP, CLH1, HNRPU, SPTB2, FOXK2, CAP1, LAT1, EXOSX, EWS, RL18A, FKBP4, RL6, TOP2B, KMT2A, LMNB2, TF65, IF4G1, TLE3, SRS11, PUR1, SUH, GABPA, PRDX1, RL18, C1QBP, KHDR1, SRSF1, DHX9, CD47, SSRP1, RBBP4, AHNK, AP1B1, NU160, BPTF, TP53B, AIMP1, ILF2, ILF3, LMAN2, TRAP1, PP1R8, ACACA, ROA0, PRDX4, CBX3, PSMD2, SRSF6, TIF1B, PTK7, PABP4, EIF3I, TCOF, SF3B2, TMED1, PICAL, RIPK1, HDAC1, CUL4B, CD166, IDI1, NFYC, CKAP5, HNRPD, SCRB2, DSG2, EIF3A, UBP2L, SCRIB, TTL12, DCTN1, DYHC1, SRC8, CAPR1, RBM39, MCM6, MDC1, EPN4, SMC1A, RRP1B, UBP10, GANAB, LBR, ZN638, IMB1, NUMA1, SEPT2, SART3, U5S1, SYK, BRD3, PDIA6, IPYR, TEBP, NONO, PWP2, RCN1, PCBP1, PCBP2, SF3B3, SAFB1, SF3A1, NCOA2, SF01, MARE1, NSDHL, TAB1, AAAT, VAS1, ZYX, CCDC6, PKN2, DDB1, CDC37, SRSF7, CPSF6, NRF1, H31T, QSER1, QRIC1, P3H1, TB10B, AMOT, DHB12, PRC2B, H2B2F, HP1B3, CE170, ZC3HD, RBM26, RIF1, RPRD2, ZN318, ECM29, ZMYM4, MAP1S, LIN54, EDC4, PRP8, SCYL2, NFRKB, ZC3HE, LARP1, FIP1, MCAF1, GGYF2, SPT6H, SND1, DHX30, KDM3B, ZCCHV, NUP54, POGZ, NUFP2, MAVS, I2BP2, RBBP6, HUWE1, YTHD3, CENPV, LYRIC, ZN598, GP180, CAND1, CARM1, DDX42, P66A, ARI3B, MGAP, PHF6, CHERP, ANKH1, SUGP1, CCAR1, SPB1, PHAR4, SPART, CCAR2, NUP93, S11IP, FNBP4, CPSF7, ARFG1, ENAH, AFG2H, TXND5, LS14A, Z280C, TNR6A, SMRC2, T