References in the O-GlcNAc Database

Clark PM, Dweck JF, Mason DE, Hart CR, Buck SB, Peters EC, Agnew BJ, Hsieh-Wilson LC. Direct in-gel fluorescence detection and cellular imaging of O-GlcNAc-modified proteins. Journal of the American Chemical Society 2008 130(35) 18683930

Abstract:
We report an advanced chemoenzymatic strategy for the direct fluorescence detection, proteomic analysis, and cellular imaging of O-GlcNAc-modified proteins. O-GlcNAc residues are selectively labeled with fluorescent or biotin tags using an engineered galactosyltransferase enzyme and [3 + 2] azide-alkyne cycloaddition chemistry. We demonstrate that this approach can be used for direct in-gel detection and mass spectrometric identification of O-GlcNAc proteins, identifying 146 novel glycoproteins from the mammalian brain. Furthermore, we show that the method can be exploited to quantify dynamic changes in cellular O-GlcNAc levels and to image O-GlcNAc-glycosylated proteins within cells. As such, this strategy enables studies of O-GlcNAc glycosylation that were previously inaccessible and provides a new tool for uncovering the physiological functions of O-GlcNAc.

O-GlcNAc proteins:
A0A0G2JYI7, A0A0G2K931, A0A0G2KAS9, ROA2, OTUB1, SEP11, B5DFG5, D3ZM69, HCFC1, D3ZQM0, D3ZUY8, D3ZVQ0, D4A0B4, D4A133, D4A1L2, D4A554, D4AA63, D4ABT8, D4ACB8, E9PT29, E9PTR4, S2512, RPGF2, F1M3L4, F1M3W5, F1M7Y3, F1M8R0, F1M949, F1M9V7, G3V7M0, G3V8Q8, HNRPC, SERA, AMPH, DCLK1, NCDN, CTND2, DNM1L, PICAL, CLIP2, ANK3, PACS1, HSP74, BSN, PTN23, AATM, CRYAA, ROA1, ENOA, HXK1, ENOG, ODP2, ALDOC, GLNA, SYN1, SORL, PLCB1, ATPB, DHE3, KCC2A, AT2A2, PDIA3, KPYM, FAS, AATC, MTAP2, MAP1B, ATPA, SPTN1, PGK1, HMCS1, AP2A2, CSK21, PO3F1, DYN1, MK03, AINX, THOP1, PGAM1, VPP1, ODPA, DCTN1, MARCS, MAP1A, 1433B, DYHC1, TERA, RP3A, PFKAM, PFKAP, ANXA6, TPIS, ODPB, NU153, GDIA, HUWE1, PYGB, GBB1, SNAA, NCKP1, OGT1, ACTB, HNRPK, 1433G, RS8, 1433E, RL7A, EF1A1, ACTA, VATB2, RS3, AP2B1, CH60, RACK1, PP2BA, KAPCB, 1433T, EF2K, VDAC2, GNAQ, TBB2A, FSCN1, ARPC2, CAND1, AP180, ADT1, ANXA2, ADT2, MYPT1, MIC60, TBB2B, CARM1, SRPRB, RD23B, TBB3, RBMX, OXR1, Q4V8F6, ZFR, WASF1, E41L5, RUFY3, DTBP1, SHLB2, Q5RJQ1, WDR1, IF4A2, CAPZB, ODO1, TBA4A, TCPB, SPTB2, 4EBP1, CAPS1, SYNJ1, DPYL1, DPYL4, DPYL3, CAMKV, KCC1A, MAP6, NDUS2, BACH, HS105, NDUS1, MAVS, PURB, QCR1, Q6AY07, Q6AYI1, PLAK, TBB4B, ROA3, Q6XLI7, PGAP1, FMR1, RB6I2, COR1A, IDH3A, PABP1, TALDO, DPYL5, WNK1, RIMS1, SEPT5, UBQL1, PCLO, MYH10, Q9JMB3, NSF, FKBP4, SHAN2, SRCN1, MYO5A, CRYM, GORS2, E41L1, GUAD, SEPT7, PACN1, Q9Z1X8, HOME1, GIT1, CTBP1, SC31A

Species: Bos taurus, Rattus norvegicus, Mus musculus

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Khidekel N, Ficarro SB, Peters EC, Hsieh-Wilson LC. Exploring the O-GlcNAc proteome: direct identification of O-GlcNAc-modified proteins from the brain. Proceedings of the National Academy of Sciences of the United States of America 2004 101(36) 15340146

Abstract:
The covalent modification of intracellular proteins by O-linked beta-N-acetylglucosamine (O-GlcNAc) is emerging as a crucial regulatory posttranslational modification akin to phosphorylation. Numerous studies point to the significance of O-GlcNAc in cellular processes such as nutrient sensing, protein degradation, and gene expression. Despite its importance, the breadth and functional roles of O-GlcNAc are only beginning to be elucidated. Advances in our understanding will require the development of new strategies for the detection and study of O-GlcNAc-modified proteins in vivo. Herein we report the direct, high-throughput analysis of O-GlcNAc-glycosylated proteins from the mammalian brain. The proteins were identified by using a chemoenzymatic approach that exploits an engineered galactosyltransferase enzyme to selectively label O-GlcNAc proteins with a ketone-biotin tag. The tag permits enrichment of low-abundance O-GlcNAc species from complex mixtures and localization of the modification to short amino acid sequences. Using this approach, we discovered 25 O-GlcNAc-glycosylated proteins from the brain, including regulatory proteins associated with gene expression, neuronal signaling, and synaptic plasticity. The functional diversity represented by this set of proteins suggests an expanded role for O-GlcNAc in regulating neuronal function. Moreover, the chemoenzymatic strategy described here should prove valuable for identifying O-GlcNAc-modified proteins in various tissues and facilitate studies of the physiological significance of O-GlcNAc across the proteome.

O-GlcNAc proteins:
A3E0T0, HCFC1, D4A3Q3, D4A543, RPGF2, BSN, CRYAA, MTAP2, MAP1B, ATF2, TLE4, Q498M7, AGFG1, ZFR, NFRKB, WNK1, SPTN2, GORS2, E41L1, SYNPO