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Wang G, Li Y, Wang T, Wang J, Yao J, Yan G, Zhang Y, Lu H. Multi-comparative Thermal Proteome Profiling Uncovers New O-GlcNAc Proteins in a System-wide Method. Analytical chemistry 2023 95(2) 36580660
Abstract:
Among diverse protein post-translational modifications, O-GlcNAcylation, a simple but essential monosaccharide modification, plays crucial roles in cellular processes and is closely related to various diseases. Despite its ubiquity in cells, properties of low stoichiometry and reversibility are hard nuts to crack in system-wide research of O-GlcNAc. Herein, we developed a novel method employing multi-comparative thermal proteome profiling for O-GlcNAc transferase (OGT) substrate discovery. Melting curves of proteins under different treatments were profiled and compared with high reproducibility and consistency. Consequently, proteins with significantly shifted stabilities caused by OGT and uridine-5'-diphosphate N-acetylglucosamine were screened out from which new O-GlcNAcylated proteins were uncovered.
O-GlcNAc proteins:
EIF3F, PDPK1, DHX15, VINEX, NDUS2, MPPB, LYPA1, STAM2, DNJC8, FBX21, SPN1, ELP1, RPP29, PNPH, RASH, K1C18, H10, ODPA, GSTT2, ACPH, UCHL3, PHKG2, RFA2, PGAM1, RS4Y1, SFPQ, PPIB, MYL9, RL13, T2EB, NMT1, HPPD, SRP14, CAP2, TCPZ, SYIC, PSMD8, NEST, DPOD2, IMA1, SYRC, PDE1A, ARPC4, ACTB, ACTZ, CSN2, COPZ1, PRS8, RAP1A, RS27A, RACK1, ACTG, UBC9, FABP5, TAGL, AK1C1, RL18, KHDR1, EIF3I, UB2V1, NFYC, CAPR1, PSMD6, UAP1, PSMD5, LEGL, QORX, PRP39, NXP20, PGAM4, CPSF7, GPT11, GNPI2, LMO7, PSMF1, SPAG5, IWS1, CNN2, PSMD1, RAD9A, THIC, WDR11, ARP3C, GORS2, ZWILC, KT3K, RRAGC, WDR6, HEBP1, RAB6B, SMC4, MA2C1, NUD15, ARP3B, FBX3, PPIE, SRRM2, RUVB2, EIF3L, TR150, STRAP, ZN330, WIPI4
Species: Homo sapiens
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Fan Z, Li J, Liu T, Zhang Z, Qin W, Qian X. A new tandem enrichment strategy for the simultaneous profiling of O-GlcNAcylation and phosphorylation in RNA-binding proteome. The Analyst 2021 146(4) 33465208
Abstract:
RNA-protein interactions play important roles in almost every step of the lifetime of RNAs, such as RNA splicing, transporting, localization, translation and degradation. Post-translational modifications, such as O-GlcNAcylation and phosphorylation, and their "cross-talk" (OPCT) are essential to the activity and function regulation of RNA-binding proteins (RBPs). However, due to the extremely low abundance of O-GlcNAcylation and the lack of RBP-targeted enrichment strategies, large-scale simultaneous profiling of O-GlcNAcylation and phosphorylation on RBPs is still a challenging task. In the present study, we developed a tandem enrichment strategy combining metabolic labeling-based RNA tagging for selective purification of RBPs and HILIC-based enrichment for simultaneous O-GlcNAcylation and phosphorylation profiling. Benefiting from the sequence-independent RNA tagging by ethynyluridine (EU) labeling, 1115 RBPs binding to different types of RNAs were successfully enriched and identified by quantitative mass spectrometry (MS) analysis. Further HILIC enrichment on the tryptic-digested RBPs and MS analysis led to the first large-scale identification of O-GlcNAcylation and phosphorylation in the RNA-binding proteome, with 461 O-GlcNAc peptides corresponding to 300 RBPs and 671 phosphopeptides corresponding to 389 RBPs. Interestingly, ∼25% RBPs modified by two PTMs were found to be related to multiple metabolism pathways. This strategy has the advantage of high compatibility with MS and provides peptide-level evidence for the identification of O-GlcNAcylated RBPs. We expect it will support simultaneous mapping of O-GlcNAcylation and phosphorylation on RBPs and facilitate further elucidation of the crucial roles of OPCT in the function regulation of RBPs.
O-GlcNAc proteins:
NACAM, SAP18, PLOD2, NOP56, DDX3X, PLXB2, RRP8, SERA, PSMD3, MCA3, PRPF3, TPD54, TIM44, ACTN4, ACSL4, PLOD3, IF2P, ZC11A, SC22B, PR40A, MPPB, CSDE1, U520, NU155, EIF3G, SPF27, RL1D1, CLPX, RTN3, LC7L3, VAPB, SMC2, AP2A1, WIZ, BAG2, TOM40, ACL6A, EGFR, LMNA, TFR1, FRIH, RPN1, RPN2, ITB1, SYEP, HNRPC, SRPRA, VIME, GNAI3, ANXA5, LAMP1, ACADM, TOP1, TOP2A, PABP1, ADT3, TPR, EF2, PDIA4, FPPS, ENPL, ALDR, NDKA, RS2, UBF1, ARF4, NUCL, RAB6A, PSB1, FLNA, SDHB, UBA1, NDKB, ITA6, SFPQ, IF4B, AT2B4, THIL, RS12, PSA4, SYVC, 1433T, MAP4, PSA5, PSB4, NDUS1, ECHM, KCY, AMRP, SDHA, METK2, CPSM, PUR9, HNRH1, 1433S, STIP1, P5CR1, MCM4, HSP74, CTNA1, MYH9, DEK, RL4, SPB5, NUP62, RBMX, TCPZ, ECE1, PRS6B, KI67, RAGP1, ATRX, SYQ, LMAN1, NASP, FAS, AL7A1, SYSC, MCM2, ACADV, NU153, RBP2, DNLI3, MRE11, CPT1A, F10A1, TCPD, RAB7A, IDH3G, HCFC1, DHB4, HDGF, ROA3, 6PGD, NUP98, ACLY, TCP4, SYYC, UBP14, SNAA, IF5, TERA, DSRAD, TPD52, EIF3B, NU107, EPIPL, SC61B, SRP54, B2MG, SMD2, RL23A, YBOX1, NOP14, IF4G2, GTF2I, NUCB2, RT22, HMGN5, RBM10, TFAM, CLH1, SPTB2, SET, CAP1, EXOSX, EWS, ODO1, RL18A, NUCB1, M2OM, LMNB2, SRS11, CALD1, RL18, C1QBP, CKAP4, KHDR1, DHX9, GOGA2, SSRP1, AHNK, AIMP1, ILF3, SRSF5, SRSF6, TIF1B, TCOF, PICAL, SNW1, TRI29, EIF3A, MLEC, CAPR1, SMC1A, RRP1B, GANAB, NUMA1, U5S1, RRS1, ACOX1, PLEC, RNPS1, PUM3, RB11B, SEPT7, DDB1, CDC37, SRSF7, PCKGM, HNRL2, INF2, PDS5A, PREP, RRP12, TOIP1, HP1B3, RBM26, BRE1A, CDKAL, PRP8, ZC3HE, QSOX2, IKIP, TM10C, EIF3M, PABP2, KTN1, CAND1, THOC6, P66A, MISP, CCAR1, PELP1, NDUF2, RM50, PAF1, TXND5, TOIP2, THOC2, TM263, NU133, PDC6I, SCFD1, LMO7, ELYS, RT27, HS105, NU205, RAD50, SMRC1, TNPO1, FUBP1, P5CR2, PTCD3, DDX27, EFGM, IWS1, NIBA2, YMEL1, PSMD1, EIF3C, ROAA, CMS1, MBB1A, GNL3, PDIP3, PININ, ACAD9, SFXN1, CYBP, RM47, RTN4, DDX21, AAAS, CARF, AATF, BCLF1, MYOF, SYLC, NXF1, SEC63, LIMA1, SEPT9, KAD3, RCOR1, ACINU, TMCO1, PPIE, PA2G4, RUVB2, TR150, RT23, CHTOP, TLN1, HYOU1, SAM50, SP16H, UTP18, SRPRB
Species: Homo sapiens
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Woo CM, Lund PJ, Huang AC, Davis MM, Bertozzi CR, Pitteri SJ. Mapping and Quantification of Over 2000 O-linked Glycopeptides in Activated Human T Cells with Isotope-Targeted Glycoproteomics (Isotag). Molecular & cellular proteomics : MCP 2018 17(4) 29351928
Abstract:
Post-translational modifications (PTMs) on proteins often function to regulate signaling cascades, with the activation of T cells during an adaptive immune response being a classic example. Mounting evidence indicates that the modification of proteins by O-linked N-acetylglucosamine (O-GlcNAc), the only mammalian glycan found on nuclear and cytoplasmic proteins, helps regulate T cell activation. Yet, a mechanistic understanding of how O-GlcNAc functions in T cell activation remains elusive, partly because of the difficulties in mapping and quantifying O-GlcNAc sites. Thus, to advance insight into the role of O-GlcNAc in T cell activation, we performed glycosite mapping studies via direct glycopeptide measurement on resting and activated primary human T cells with a technique termed Isotope Targeted Glycoproteomics. This approach led to the identification of 2219 intact O-linked glycopeptides across 1045 glycoproteins. A significant proportion (>45%) of the identified O-GlcNAc sites lie near or coincide with a known phosphorylation site, supporting the potential for PTM crosstalk. Consistent with other studies, we find that O-GlcNAc sites in T cells lack a strict consensus sequence. To validate our results, we employed gel shift assays based on conjugating mass tags to O-GlcNAc groups. Notably, we observed that the transcription factors c-JUN and JUNB show higher levels of O-GlcNAc glycosylation and higher levels of expression in activated T cells. Overall, our findings provide a quantitative characterization of O-GlcNAc glycoproteins and their corresponding modification sites in primary human T cells, which will facilitate mechanistic studies into the function of O-GlcNAc in T cell activation.
O-GlcNAc proteins:
UBA6, ESYT2, HACL2, DEND3, SBNO1, XIRP2, CNOT1, PINLY, MT21E, SWAHB, P121B, TCAF2, MET15, F177B, P121C, GNAT3, MYO1G, SPT5H, TAF4, PK3CD, DNM1L, P3C2A, BT3A1, PSDE, BIN1, PITM1, DDX3X, RNT2, ARI1A, NCKP5, TRAD1, RHG33, ABLM1, KMT2D, IFIT3, HGS, MYPT1, S27A2, GAK, SC16A, SET1A, KDM6B, ARHGB, FYB1, ATX7, SHIP2, EIF3D, EIF3H, TOX3, NUP42, MEFV, DHX15, ZZEF1, PHF1, ZW10, PRPF3, TPD54, EMC8, SYNJ1, IF4G3, E41L2, WIPF1, LAT, OX1R, PLRG1, ZN207, ST1B1, LANC1, AKAP8, PLIN1, ZN292, AQR, GANP, HBP1, LY75, OGA, DIAP1, MAFK, HCN1, CCD22, BRD4, PP1RB, ABCB7, KI21B, LRP4, N4BP1, CPNE3, OBSL1, BRE1B, CAND2, T22D2, PP6R2, ANR17, H2AY, FLNB, NCOR1, PR40A, LRCH4, MPPB, PSIP1, NDUS3, KS6A5, MYCB2, U520, CCNK, CBPD, CYTF, LTN1, TOX4, PHF14, SUN1, PCF11, FRYL, TRI37, SC31A, CE152, AGFG2, SCAF4, SPN1, RTN3, APOL3, ATE1, CELF2, 6PGL, IPO7, CD2B2, ABCA1, SC24A, SC24B, PCNT, CNOT4, HERC2, HS74L, RIGI, M4K4, AIFM1, TXD12, LDHA, COX1, A1AT, FOS, LDLR, LMNA, ALBU, CYTB, GCR, HG2A, K2C1, G3P, HLAA, CPNS1, RPN1, RPN2, GNAI2, AT1A1, RLA2, JUN, ATPB, CD2, NPM, ANXA2, SYEP, TSP1, SP1, ANXA6, MDR1, HS90B, INHBA, ODPA, PTPRC, RU2B, HCK, VIME, GNAI3, ADA2A, HMGB1, ROA1, LKHA4, DERPC, F231L, GLI2, GRAB, RO60, RARB, HSP7C, EGR2, ODPB, LAMP1, SRF, FA5, IMDH2, TPR, SKI, ACTN1, K1C10, CEAM1, PLSL, GLU2B, HCLS1, PO2F1, RAC2, ATF2, FOSL2, PGCA, LEUK, CREB1, GDC, PECA1, MGMT, ZNF25, JUNB, UBF1, JUND, ATF7, PTN2, DDX5, EGR1, PTPRA, SON, RCC1, ATF1, ML12A, PLCG1, NUCL, NFKB1, LMNB1, CAN3, HNF1A, FLNA, TNAP3, PIMT, UBA1, ROA2, RFX1, CBL, QCR2, MAOM, SP100, NFYA, IF4B, AT2B4, RPB1, BRD2, ATPA, DDX6, PTBP1, ARNT, RFA1, APEX1, PYR1, CALR, MAP4, ERCC5, PTN6, SPB3, PDIA3, 2AAA, HLAF, HMOX2, CLIP1, RPB2, COR1A, ZEP2, HNRH3, HNRH1, STIP1, ELF1, KINH, LSP1, PHB1, PTN7, RFC4, MYH9, MYH10, COPB2, ACTN2, SOAT1, ADDA, FUS, NU214, ATP7B, MYH11, GLRX1, PPM1A, K22E, MP2K2, NUP62, GRP75, IF4A3, COIA1, STAT3, MDHM, ECHA, IF2G, PERI, ELK3, LAP2A, LAP2B, STAT1, RHG25, DPP6, HD, MATR3, GPDM, ZAP70, TNR4, VDAC2, MP2K4, NOP2, NOTC1, UTRN, IQGA1, STT3A, NPBW1, COPD, AGRE5, NASP, FAS, EFTU, CENPF, MA2A2, YLPM1, CLK1, NU153, RBP2, TAF6, GUAA, IDH3A, EMD, LRBA, AT1A2, MECP2, HCFC1, CCR3, KS6A3, LUM, ROA3, GDIR2, AGFG1, STAT2, TF2AA, CAZA1, NUP98, FOSB, SUCA, COPA, ITA8, SC24C, ATX1, UBP14, RD23B, EPHB3, AF17, CASP6, DSRAD, PSA, TPIS, SC61B, ACTB, ARF3, HNRPK, RS16, ACTA, GBB1, PPIA, RS27A, AP2B1, 1433Z, IF5A1, RACK1, ACTG, ACTS, TBA1B, TBA4A, PHC1, PRKDC, BTG2, SSBP2, ATL3, TXN4A, FOXK1, RHG04, NFKB2, SPTB2, FOXK2, RUNX1, AMPD2, CAP1, FLI1, OTUD4, PFKAP, SATB1, EWS, MEF2A, SP2, RHAG, SP4, SP3, RL18A, NUCB1, DYST, CREM, KMT2A, TF65, IF4G1, TLE3, TLE4, REL, UBE3A, GABPA, GABP1, CD69, ZO1, TLE5, DHX9, GOGA3, SLFN5, S38AB, RBBP4, NCBP1, AHNK, MN1, FOXO1, TBL3, TF3C1, AKP13, BPTF, NFIA, CHD3, TP53B, ANK3, PP1R8, AKAP6, ROA0, PAK2, TBX2, M3K1, ATM, DC1I2, IKZF1, TCOF, ROCK1, NFAC2, SMAD4, PICAL, PRP4B, SNW1, IQGA2, MTMR1, MTMR3, CUL4A, CUL4B, RUNX3, NFYC, KGP1, CDK13, IL16, CKAP5, CO4A6, VEZF1, MORC3,