References in the O-GlcNAc Database

Pecori F, Kondo N, Ogura C, Miura T, Kume M, Minamijima Y, Yamamoto K, Nishihara S. Site-specific O-GlcNAcylation of Psme3 maintains mouse stem cell pluripotency by impairing P-body homeostasis. Cell reports 2021 36(2) 34260942

Abstract:
Mouse embryonic stem cell (ESC) pluripotency is tightly regulated by a complex network composed of extrinsic and intrinsic factors that allow proper organismal development. O-linked β-N-acetylglucosamine (O-GlcNAc) is the sole glycosylation mark found on cytoplasmic and nuclear proteins and plays a pivotal role in regulating fundamental cellular processes; however, its function in ESC pluripotency is still largely unexplored. Here, we identify O-GlcNAcylation of proteasome activator subunit 3 (Psme3) protein as a node of the ESC pluripotency network. Mechanistically, O-GlcNAc modification of serine 111 (S111) of Psme3 promotes degradation of Ddx6, which is essential for processing body (P-body) assembly, resulting in the maintenance of ESC pluripotent state. Conversely, loss of Psme3 S111 O-GlcNAcylation stabilizes Ddx6 and increases P-body levels, culminating in spontaneous exit of ESC from the pluripotent state. Our findings establish O-GlcNAcylation at S111 of Psme3 as a switch that regulates ESC pluripotency via control of P-body homeostasis.

O-GlcNAc proteins:
SP1, HSPA9, CAPZB, ATPB, PSME3, CH60, 1433Z, TCPE, ANXA7, DAND5, ODPB, TBB4A

Species: Mus musculus

Download

BIB

JSON

CSV

XLSX

Chuh KN, Zaro BW, Piller F, Piller V, Pratt MR. Changes in metabolic chemical reporter structure yield a selective probe of O-GlcNAc modification. Journal of the American Chemical Society 2014 136(35) 25153642

Abstract:
Metabolic chemical reporters (MCRs) of glycosylation are analogues of monosaccharides that contain bioorthogonal functionalities and enable the direct visualization and identification of glycoproteins from living cells. Each MCR was initially thought to report on specific types of glycosylation. We and others have demonstrated that several MCRs are metabolically transformed and enter multiple glycosylation pathways. Therefore, the development of selective MCRs remains a key unmet goal. We demonstrate here that 6-azido-6-deoxy-N-acetyl-glucosamine (6AzGlcNAc) is a specific MCR for O-GlcNAcylated proteins. Biochemical analysis and comparative proteomics with 6AzGlcNAc, N-azidoacetyl-glucosamine (GlcNAz), and N-azidoacetyl-galactosamine (GalNAz) revealed that 6AzGlcNAc exclusively labels intracellular proteins, while GlcNAz and GalNAz are incorporated into a combination of intracellular and extracellular/lumenal glycoproteins. Notably, 6AzGlcNAc cannot be biosynthetically transformed into the corresponding UDP sugar-donor by the canonical salvage-pathway that requires phosphorylation at the 6-hydroxyl. In vitro experiments showed that 6AzGlcNAc can bypass this roadblock through direct phosphorylation of its 1-hydroxyl by the enzyme phosphoacetylglucosamine mutase (AGM1). Taken together, 6AzGlcNAc enables the specific analysis of O-GlcNAcylated proteins, and these results suggest that specific MCRs for other types of glycosylation can be developed. Additionally, our data demonstrate that cells are equipped with a somewhat unappreciated metabolic flexibility with important implications for the biosynthesis of natural and unnatural carbohydrates.

O-GlcNAc proteins:
A1BN54, A2A4Z1, A2A6U3, A2AFJ1, A2AG83, A2AL12, A2AMW0, A2AMY5, LAS1L, B1AU75, OTUD4, B7FAU9, B7ZP47, D3YUC9, D3YVJ7, SAFB1, D3Z4W3, E9PVC5, E9PZM7, E9Q066, E9Q2X6, E9Q310, E9Q5L7, E9Q7M2, E9Q986, F6T2Z7, G3UZ44, G3UZI2, G3X8Q0, G3X8Y3, G3X928, G3X972, G3X9V0, G5E8E1, H3BKK2, J3JS94, CAN2, DPYL2, AIP, HDAC1, MP2K3, GSH0, DHX15, ZW10, AKAP2, SLK, NMT1, E41L2, SRPK1, PARG, SPD2A, LDHA, ANXA2, RIR1, ANXA1, LMNB1, LEG1, G3P, TPIS, COF1, FAS, CBX3, BCAT1, MCM3, MAP4, FKBP4, HMGB2, AIMP1, MP2K1, SYWC, RANG, UBP4, PTN11, RAB5C, DNLI1, CAP1, STAT3, EPS15, PURA, MSH2, ALD2, PURA2, NEDD4, GFPT1, PCY1A, ICAL, HDGF, UBP10, ACTN4, EF2, TB182, SF3B6, PCBP1, PSME3, PFD3, MTPN, DNJA1, SUMO1, IF5A1, UB2L3, HDAC2, ELAV1, 4EBP2, PYRG1, TCPB, BOP1, DAB2, XDH, UBA1, LARP7, CNN2, PP4R2, PSA, Q3TFP0, GUAA, METK2, FA98A, Q3TT92, UAP1L, NOL9, FUBP2, Q3U4W8, YRDC, NOL8, COBL1, CSTOS, LRRF1, Q3V3Y9, DDX17, MDC1, TENS3, Q5UE59, SRC8, SAMH1, KHDR1, SPB6, CAPR1, PAPS1, ASNS, LAP2B, LAP2A, PPM1G, CDC37, FXR1, PCBP2, KPCI, DDX3X, TSN, DBNL, CYTB, ZYX, RALY, SQSTM, TPP2, PEAK1, NOP58, TPM4, LTV1, ZC11A, Q6P5B5, SMHD1, GGA2, TXLNA, JUPI2, UBE2O, LARP1, 2AAA, MTCH2, DEK, MBB1A, ATX2L, OTUB1, MAP6, AFTIN, FLNB, PI42B, ZN598, SAFB2, GRWD1, CPPED, LPP, PEF1, IF4B, SYAC, RUFY1, PRUN1, CTF18, AHSA1, RCC2, IPO5, CKAP4, PPR18, HEAT3, SRRM2, HAT1, MAP1S, TLK1, CND2, THOP1, SEP11, TBL3, SEP10, UBA6, SYEP, GNL3, PDLI5, HMCS1, PKHO2, NEK9, ANLN, MATR3, CBR3, MEPCE, ERF3A, SPART, TDIF2, MCMBP, UBP15, MAVS, Q8VCQ8, PSMD2, FLNC, CPIN1, ACLY, MK67I, RINI, PUS7, CSDE1, DUS3L, KCC1A, TTC1, TADBP, RIN1, NONO, RRAGC, SERB, UBQL4, OGFR, NPM3, GLOD4, MTAP, CYB5B, PSMD9, CHSP1, OCAD1, RANB3, MFR1L, TBC15, CYBP, ZCHC8, GARS, CD37L, UB2V1, HNRPM, Q9D4G5, NOP56, IPYR, CNN3, KAP0, PLIN3, AKAP8, XRN2, MYPT1, PUR6, WDR4, SENP3, LIMA1, ANM1, NUP50, DDX20, IQGA1, MBNL1, ELOV1, DCLK1, BAG3, PPCE, CAF1A, LIMD1, DREB, TOM40, DEST, FOXO1, NFKB2, PDC6I, COR1C, TAGL2, CARM1, MTNB, GBP2, P5CS, EIF3G, SAE2, USO1, HNRPF, KEAP1