IUBMB Enzyme Nomenclature


Accepted name: 1,3-β-galactosyl-N-acetylhexosamine phosphorylase

Reaction: β-D-galactopyranosyl-(1→3)-N-acetyl-D-glucosamine + phosphate = α-D-galactopyranose 1-phosphate + N-acetyl-D-glucosamine

Other name(s): lacto-N-biose phosphorylase; LNBP; galacto-N-biose phosphorylase

Systematic name: β-D-galactopyranosyl-(1→3)-N-acetyl-D-hexosamine:phosphate galactosyltransferase

Comments: Reaction also occurs with β-D-galactopyranosyl-(1→3)-N-acetyl-D-galactosamine as the substrate, giving N-acetyl-D-galactosamine as the product.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 224427-06-9


1. Derensy-Dron, D., Krzewinski, F., Brassart, C. and Bouquelet S. β-1,3-Galactosyl-N-acetylhexosamine phosphorylase from Bifidobacterium bifidum DSM 20082: characterization, partial purification and relation to mucin degradation. Biotechnol. Appl. Biochem. 29 (1999) 3-10. [PMID: 9889079]

[EC created 2001]

Return to EC 2.4.1 home page
Return to EC 2.4 home page
Return to EC 2 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page