ExplorEnz: EC 3.2.1.230

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3.2.1.230

Accepted name:

galactoligosaccharide 1,2-β-galactosidase

Reaction:

Hydrolysis of terminal, non-reducing β-D-galactose residues in (1→2)-β-D-galactooligosaccharides.

Other name(s):

β-1,2-galactosidase

Systematic name:

galactooligosaccharide exo β-(1,2)-D-galactopyranosidase (non-reducing end)

Comments:

The enzyme, characterized from the bacterium Bacteroides xylanisolvens, specifically hydrolyses β-(1,2)-galactopyranosidic bond at the non-reducing end of (1→2)-β-galactooligosaccharides. cf. EC 3.2.1.23, β-galactosidase; EC 3.2.1.108, lactase, and EC 3.2.1.145, galactan 1,3-β-galactosidase.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc

References:

Nakazawa, Y., Kageyama, M., Matsuzawa, T., Liang, Z., Kobayashi, K., Shimizu, H., Maeda, K., Masuhiro, M., Motouchi, S., Kumano, S., Tanaka, N., Kuramochi, K., Nakai, H., Taguchi, H. and Nakajima, M. Structure and function of a β-1,2-galactosidase from Bacteroides xylanisolvens, an intestinal bacterium. Commun Biol 8:66 (2025). [DOI] [PMID: 39820076]

[EC 3.2.1.230 created 2025]