IUBMB Enzyme Nomenclature


Accepted name: UDP-N-acetylgalactosamine diphosphorylase

Reaction: UTP + N-acetyl-α-D-galactosamine 1-phosphate = diphosphate + UDP-N-acetyl-α-D-galactosamine

Systematic name: UTP:N-acetyl-α-D-galactosamine-1-phosphate uridylyltransferase

Comments: The enzyme from plants and animals also has activity toward N-acetyl-α-D-glucosamine 1-phosphate (cf. EC, UDP-N-acetylglucosamine diphosphorylase) [1,2].

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:


1. Wang-Gillam, A., Pastuszak, I. and Elbein, A.D. A 17-amino acid insert changes UDP-N-acetylhexosamine pyrophosphorylase specificity from UDP-GalNAc to UDP-GlcNAc. J. Biol. Chem. 273 (1998) 27055-27057. [PMID: 9765219]

2. Peneff, C., Ferrari, P., Charrier, V., Taburet, Y., Monnier, C., Zamboni, V., Winter, J., Harnois, M., Fassy, F. and Bourne, Y. Crystal structures of two human pyrophosphorylase isoforms in complexes with UDPGlc(Gal)NAc: role of the alternatively spliced insert in the enzyme oligomeric assembly and active site architecture. EMBO J. 20 (2001) 6191-6202. [PMID: 11707391]

[EC created 2012]

Return to EC 2.7.7 home page
Return to EC 2.7 home page
Return to EC 2 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page