References in the O-GlcNAc Database

Hahne H, Sobotzki N, Nyberg T, Helm D, Borodkin VS, van Aalten DM, Agnew B, Kuster B. Proteome wide purification and identification of O-GlcNAc-modified proteins using click chemistry and mass spectrometry. Journal of proteome research 2013 12(2) 23301498

Abstract:
The post-translational modification of proteins with N-acetylglucosamine (O-GlcNAc) is involved in the regulation of a wide variety of cellular processes and associated with a number of chronic diseases. Despite its emerging biological significance, the systematic identification of O-GlcNAc proteins is still challenging. In the present study, we demonstrate a significantly improved O-GlcNAc protein enrichment procedure, which exploits metabolic labeling of cells by azide-modified GlcNAc and copper-mediated Click chemistry for purification of modified proteins on an alkyne-resin. On-resin proteolysis using trypsin followed by LC-MS/MS afforded the identification of around 1500 O-GlcNAc proteins from a single cell line. Subsequent elution of covalently resin bound O-GlcNAc peptides using selective β-elimination enabled the identification of 185 O-GlcNAc modification sites on 80 proteins. To demonstrate the practical utility of the developed approach, we studied the global effects of the O-GlcNAcase inhibitor GlcNAcstatin G on the level of O-GlcNAc modification of cellular proteins. About 200 proteins including several key players involved in the hexosamine signaling pathway showed significantly increased O-GlcNAcylation levels in response to the drug, which further strengthens the link of O-GlcNAc protein modification to cellular nutrient sensing and response.

O-GlcNAc proteins:
UBA6, SHOT1, MEX3A, TPC13, CNOT1, PGP, RIMC1, SMHD1, CC85C, I4E1B, ZBBX, B2R8K8, B2RB32, B3KNS4, B3KUR4, B4DF70, B4DIH0, B4DIR9, B4DTN6, B8XCX8, DX39A, BACH, GTPB1, SMAP, AP3B1, PSD12, PSMD9, ATOX1, PGRC1, SPT5H, TAF4, DFFA, CLIC1, EIF3F, WASL, IPO5, EF2K, PLOD2, MEIS1, PSDE, IMA4, BCL9, SDCB1, NOP56, IMA3, ARI1A, UBFD1, CCS, DVL2, KMT2D, ANM5, TNPO2, GEMI2, HAT1, MYPT1, GAK, XPO1, ZN609, SC16A, SR140, PUR4, NKRF, ZN185, CASC3, OGT1, PMM2, HMGB3, PPM1G, SHIP2, NVL, NUP42, R113A, KDM6A, DHX15, MCES, RRP8, SERA, DC1L2, ZW10, M3K7, RIPK2, WDR62, TXNL1, IF4G3, E41L2, FOXO3, DENR, XPOT, BUB3, ACTN4, HTSF1, SGTA, SYNC, LANC1, DHX16, ZNRD2, KPRB, AQR, GANP, HNRPQ, BUB1B, DIAP1, PLIN3, ANM3, CTND1, EIF1B, USO1, IF2P, NBN, SRGP2, N4BP1, ROCK2, CLAP2, CPNE3, BRE1B, ZC11A, CLU, T22D2, ANR17, GGCT, HMMR, VATG1, FLNB, NCOR1, SPAG7, PR40A, GGYF1, PSIP1, NDUS3, SRS10, KHDR3, SF3B1, CSDE1, PRKRA, KS6A5, NPM3, LYPA1, U520, TIPRL, OFD1, WDHD1, CD123, EIF3G,

REFERENCES