ID 2.4.1.145 DE alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase. AN alpha-1,3-mannosylglycoprotein beta-1,4-N-acetylglucosaminyltransferase. AN beta-acetylglucosaminyltransferase IV. AN GnTIV. AN N-acetylglucosaminyltransferase IV. AN N-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase AN IV. AN uridine diphosphoacetylglucosamine-glycopeptide beta4- AN acetylglucosaminyltransferase IV. CA N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)- CA alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D- CA GlcNAc}-L-asparaginyl-[protein] + UDP-N-acetyl-alpha-D-glucosamine = H(+) CA + N(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)- CA [beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D- CA GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein] + UDP. CC -!- The enzyme, found in vertebrates, participates in the processing of CC N-glycans in the Golgi apparatus. CC -!- By adding a glucosaminyl residue to biantennary N-linked glycans, CC it enables the synthesis of tri- and tetra-antennary complexes. CC -!- Formerly EC 2.4.1.51. DR O77836, MGT4A_BOVIN; Q5F407, MGT4A_CHICK; Q9UM21, MGT4A_HUMAN; DR Q4R854, MGT4A_MACFA; Q812G0, MGT4A_MOUSE; Q5REP8, MGT4A_PONAB; DR Q5M854, MGT4A_RAT ; Q6GQI7, MGT4A_XENLA; A4IID1, MGT4A_XENTR; DR Q6GMK0, MGT4B_DANRE; Q9UQ53, MGT4B_HUMAN; Q812F8, MGT4B_MOUSE; DR Q5U3T0, MGT4C_DANRE; Q9UBM8, MGT4C_HUMAN; Q4R4A8, MGT4C_MACFA; DR Q9D306, MGT4C_MOUSE; Q6ITT3, MGT4C_PIG ; //