ID   2.4.1.313
DE   protein O-mannose beta-1,3-N-acetylgalactosaminyltransferase.
CA   3-O-(N-acetyl-beta-D-glucosaminyl-(1->4)-alpha-D-mannosyl)-L-threonyl-
CA   [protein] + UDP-N-acetyl-alpha-D-galactosamine = 3-O-[beta-D-GalNAc-
CA   (1->3)-beta-D-GlcNAc-(1->4)-alpha-D-Man]-L-Thr-[protein] + H(+) + UDP.
CC   -!- The human protein is specific for UDP-N-acetyl-alpha-D-galactosamine
CC       as donor.
CC   -!- The enzyme is involved in the formation of a phosphorylated
CC       trisaccharide on a threonine residue of alpha-dystroglycan,
CC       an extracellular peripheral glycoprotein that acts as a receptor for
CC       extracellular matrix proteins containing laminin-G domains.
DR   Q502B3, B3GL2_DANRE;  Q8NCR0, B3GL2_HUMAN;  Q8BG28, B3GL2_MOUSE;
DR   Q6NRQ1, B3GL2_XENLA;  Q5M900, B3GL2_XENTR;
//