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Lin CH, Liao CC, Wang SY, Peng CY, Yeh YC, Chen MY, Chou TY. Comparative O-GlcNAc Proteomic Analysis Reveals a Role of O-GlcNAcylated SAM68 in Lung Cancer Aggressiveness. Cancers 2022 14(1) 35008409
Abstract:
O-GlcNAcylation is a reversible and dynamic post-translational protein modification catalyzed by O-GlcNAc transferase (OGT). Despite the reported association of O-GlcNAcylation with cancer metastasis, the O-GlcNAc proteome profile for cancer aggressiveness remains largely uncharacterized. Here, we report our comparative O-GlcNAc proteome profiling of two differentially invasive lung adenocarcinoma cell lines, which identified 158 down-regulated and 106 up-regulated candidates in highly invasive cells. Among these differential proteins, a nuclear RNA-binding protein, SAM68 (SRC associated in mitosis of 68 kDa), was further investigated. Results showed that SAM68 is O-GlcNAcylated and may interact with OGT in the nucleus. Eleven O-GlcNAcylation sites were identified, and data from mutant analysis suggested that multiple serine residues in the N-terminal region are important for O-GlcNAcylation and the function of SAM68 in modulating cancer cell migration and invasion. Analysis of clinical specimens found that high SAM68 expression was associated with late cancer stages, and patients with high-OGT/high-SAM68 expression in their tumors had poorer overall survival compared to those with low-OGT/low-SAM68 expression. Our study revealed an invasiveness-associated O-GlcNAc proteome profile and connected O-GlcNAcylated SAM68 to lung cancer aggressiveness.
O-GlcNAc proteins:
A0A024R7P5, A0A024R9E2, A0A087WWU8, A0A0A0MTS7, SHOT1, A8K3C3, A8K9J7, B7Z2Z8, B7Z596, D3DS63, E7ETM0, E7EVA0, F8VR77, G3V1C3, H0YN18, H3BPE1, K7ERG4, PSD12, DFFA, PLOD2, PSDE, BIN1, TCRG1, ML12B, HGS, HNRDL, RPAC1, P4HA2, HNRPR, PLRG1, ZN207, BUB3, ACTN4, KDM1A, PLOD3, CPNE3, FLNB, NU155, GLRX3, MTA2, SC31A, UBE4B, TFR1, ANXA1, HSPB1, ITB1, DCUP, GELS, ENOA, NPM, TPM3, LDHB, ANXA2, TBB5, HNRPC, TPM2, ANXA6, 4F2, VIME, ANXA5, RSSA, ENOG, TPM1, PARP1, UBB, UBC, CH60, ACADM, G6PD, PCNA, KCRB, KCRU, ACTN1, XRCC6, EF2, KAP2, SYDC, AMPN, EZRI, NAGAB, HMGA1, ML12A, AOC1, ICAL, VATB2, FLNA, OSBP1, UBA1, GCSH, PSA1, PSA3, SYVC, TPP2, CLIP1, HNRH3, KINH, HSP74, RADI, MYH9, MYH10, ACTN2, ADDA, FUS, MYH11, RL4, ODO2, VATA, CAP2, GARS, MSH2, PRS6B, UBP5, RS9, MAP1B, IQGA1, KC1A, NASP, FAS, SYAC, NU153, HDGF, ACLY, SYYC, RD23A, PSMD4, TERA, EIF3B, IF6, PSA6, RS3A, HNRPK, 1433G, PP1B, PRS8, RL7A, PP2AB, RS6, RL10A, RS27A, RL40, 2ABA, TPM4, EF1A1, GTF2I, RAE1L, HNRPU, SPTB2, EWS, PLCB3, FKBP4, IF4G1, SSBP, 1433F, PUR1, PRDX1, KHDR1, ACTN3, PP2BA, ILF2, ACACA, CBX3, G3BP1, EIF3I, DC1I2, ROCK1, HDAC1, CUL1, NACA, SPTN1, SMC1A, GANAB, PSME4, SYK, PLEC, PP1R7, SC23A, SC23B, TSN, CIP4, MARE1, DDB1, CART, RBBP7, ACTBL, ST1C3, P4R3A, Q6IPH7, C2D1A, POTEE, SND1, CYFP1, MON2, MYH14, CAND1, ABCA7, LRC47, THMS1, CPSF7, GT251, PAIRB, ABCF1, Q8TDJ5, Q8WWH9, AGRV1, TCPW, TFG, STAM1, SNR40, VPS35, SIN3A, NIBA2, PSB7, TSNAX, BDH2, RBM4, XRN2, SPTN4, SLK, MYG1, XPP1, UGGG1, CPSF2, NAGK, NUDT5, PRP19, UBQL1, PACN2, SNX6, NCKP1, HYOU1, LSM4, SNX5, S23IP, V9HVZ7, V9HW77
Species: Homo sapiens
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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 2022 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.
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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Zhang W, Liu T, Dong H, Bai H, Tian F, Shi Z, Chen M, Wang J, Qin W, Qian X. Synthesis of a Highly Azide-Reactive and Thermosensitive Biofunctional Reagent for Efficient Enrichment and Large-Scale Identification of O-GlcNAc Proteins by Mass Spectrometry. Analytical chemistry 2017 89(11) 28510447
Abstract:
O-linked β-N-acetylglucosamine (O-GlcNAc) is a ubiquitous post-translational modification of proteins in eukaryotic cells. Despite their low abundance, O-GlcNAc-modified proteins play many important roles in regulating gene expression, signal transduction, and cell cycle. Aberrant O-GlcNAc proteins are correlated with many major human diseases, such as Alzheimer's disease, diabetes, and cancer. Because of the extremely low stoichiometry of O-GlcNAc proteins, enrichment is required before mass spectrometry analysis for large-scale identification and in-depth understanding of their cellular function. In this work, we designed and synthesized a novel thermosensitive immobilized triarylphosphine reagent as a convenient tool for efficient enrichment of azide-labeled O-GlcNAc proteins from complex biological samples. Immobilization of triarylphosphine on highly water-soluble thermosensitive polymer largely increases its solubility and reactivity in aqueous solution. As a result, facilitated coupling is achieved between triarylphosphine and azide-labeled O-GlcNAc proteins via Staudinger ligation, due to the increased triarylphosphine concentration, reduced interfacial mass transfer resistance, and steric hindrance in homogeneous reaction. Furthermore, solubility of the polymer from complete dissolution to full precipitation can be easily controlled by simply adjusting the environmental temperature. Therefore, facile sample recovery can be achieved by increasing the temperature to precipitate the polymer-O-GlcNAc protein conjugates from solution. This novel immobilized triarylphosphine reagent enables efficient enrichment and sensitive detection of more than 1700 potential O-GlcNAc proteins from HeLa cell using mass spectrometry, demonstrating its potential as a general strategy for low-abundance target enrichment.