IUBMB Enzyme Nomenclature


Accepted name: galactan endo-β-1,3-galactanase

Reaction: The enzyme specifically hydrolyses β-1,3-galactan and β-1,3-galactooligosaccharides

Other name(s): endo-β-1,3-galactanase

Systematic name: arabinogalactan 3-β-D-galactanohydrolase

Comments: The enzyme from the fungus Flammulina velutipes (winter mushroom) hydrolyses the β(1→3) bonds found in type II plant arabinogalactans, which occur in cell walls of dicots and cereals. The enzyme is an endohydrolase, and requires at least 3 contiguous β-1,3-residues. cf. EC, arabinogalactan endo-β-1,4-galactanase and EC, galactan 1,3-β-galactosidase.

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


1. Kotake, T., Hirata, N., Degi, Y., Ishiguro, M., Kitazawa, K., Takata, R., Ichinose, H., Kaneko, S., Igarashi, K., Samejima, M. and Tsumuraya, Y. Endo-β-1,3-galactanase from winter mushroom Flammulina velutipes. J. Biol. Chem. 286 (2011) 27848-27854. [PMID: 21653698]

[EC created 2012]

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