ID 2.4.1.255 DE protein O-GlcNAc transferase. AN OGTase. AN O-linked N-acetylglucosaminyltransferase. CA (1) L-seryl-[protein] + UDP-N-acetyl-alpha-D-glucosamine = 3-O-(N-acetyl- CA beta-D-glucosaminyl)-L-seryl-[protein] + H(+) + UDP. CA (2) L-threonyl-[protein] + UDP-N-acetyl-alpha-D-glucosamine = 3-O- CA (N-acetyl-beta-D-glucosaminyl)-L-threonyl-[protein] + H(+) + UDP. CC -!- Within higher eukaryotes post-translational modification of protein CC serines/threonines with N-acetylglucosamine (O-GlcNAc) is dynamic, CC inducible and abundant, regulating many cellular processes by CC interfering with protein phosphorylation. CC -!- EC 2.4.1.255 transfers GlcNAc onto substrate proteins and CC EC 3.2.1.169 cleaves GlcNAc from the modified proteins. DR A0JND3, EOGT_BOVIN ; Q5NDL9, EOGT_CANLF ; Q5NDL3, EOGT_CHICK ; DR Q9VQB7, EOGT_DROME ; Q5NDL2, EOGT_HUMAN ; Q8BYW9, EOGT_MOUSE ; DR Q5NDL1, EOGT_PANTR ; Q5NDL0, EOGT_RAT ; Q6GQ23, EOGT_XENLA ; DR Q08CY9, EOGT_XENTR ; O18158, OGT1_CAEEL ; A8BFN4, OGT1_GIAIC ; DR O15294, OGT1_HUMAN ; Q8CGY8, OGT1_MOUSE ; Q27HV0, OGT1_PIG ; DR P81436, OGT1_RABIT ; P56558, OGT1_RAT ; Q9M8Y0, SEC_ARATH ; DR Q96301, SPY_ARATH ; Q8LP10, SPY_EUSER ; O82422, SPY_HORVU ; DR Q6YZI0, SPY_ORYSJ ; O82039, SPY_PETHY ; Q8RVB2, SPY_SOLLC ; //