microglycodb_gene_00052

Gene Number BLLJ_1841
UniProt ID A0A401ETL2
NCBI Protein ID FAA01256.1    
Protein Name
Enzyme Name exo-β-1,6-galactanase (renamed exo-β-1,6-galactobiohydrolase)
CAZy Family GH30_5
Reviewed true
Organism Bifidobacterium longum
sequence
functions
publications
reaction

 Involved in the type II arabinogalactan (AG) side chains degradation (PubMed:30564851). Specifically releases the non-reducing terminal beta-1,6-galactobiose (beta-1,6-Gal2) from both dearabinosylated larch AG and polymeric beta-1,6-galactan chains by an exo-mode of action (PubMed:30564851). Shows lower activity with larch AG, and very weak activity with dearabinosylated gum arabic, gum arabic and potato galactan (PubMed:30564851). Can probably release beta-1,6-Gal2 from the internal side chains of type II AG (PubMed:30564851).

 kcat is 261 sec(-1) with beta-1,6-Gal3 as substrate.