ID   2.4.1.101
DE   alpha-1,3-mannosyl-glycoprotein 2-beta-N-acetylglucosaminyltransferase.
AN   alpha-1,3-mannosyl-glycoprotein beta-1,2-N-acetylglucosaminyltransferase.
AN   GlcNAc-T I.
AN   GnTI.
AN   N-acetylglucosaminyltransferase I.
AN   N-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase
AN   I.
AN   uridine diphosphoacetylglucosamine-alpha-1,3-mannosylglycoprotein beta-
AN   1,2-N-acetylglucosaminyltransferase.
CA   N(4)-(alpha-D-Man-(1->3)-[alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-alpha-
CA   D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc)-L-
CA   asparaginyl-[protein] (N-glucan mannose isomer 5A1,2) + UDP-N-acetyl-
CA   alpha-D-glucosamine = H(+) + N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-
CA   (1->3)-[alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-alpha-D-Man-(1->6)]-beta-
CA   D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]
CA   + UDP.
CC   -!- The enzyme, found in plants and animals, participates in the
CC       processing of N-glycans in the Golgi apparatus.
CC   -!- Its action is required before the other
CC       N-acetylglucosaminyltransferases involved in the process (GlcNAcT-II
CC       through VI) can act.
CC   -!- While the natural substrate (produced by EC 3.2.1.113) is described
CC       here, the minimal substrate recognized by the enzyme is alpha-D-Man-
CC       (1->3)-beta-D-Man-R.
CC   -!- Formerly EC 2.4.1.51.
DR   Q9XGM8, MGAT1_ARATH;  Q11068, MGAT1_CAEEL;  P26572, MGAT1_HUMAN;
DR   P27808, MGAT1_MOUSE;  P27115, MGAT1_RABIT;  Q09325, MGAT1_RAT  ;
//