IUBMB Enzyme Nomenclature


Accepted name: non-reducing end β-L-arabinofuranosidase

Reaction: β-L-arabinofuranosyl-(1→2)-β-L-arabinofuranose + H2O = 2 β-L-arabinofuranose

Other name(s): HypBA1

Systematic name: β-L-arabinofuranoside non-reducing end β-L-arabinofuranosidase

Comments: The enzyme, which was identified in the bacterium Bifidobacterium longum JCM1217, removes the β-L-arabinofuranose residue from the non-reducing end of multiple substrates, including β-L-arabinofuranosyl-hydroxyproline (Ara-Hyp), Ara2-Hyp, Ara3-Hyp, and β-L-arabinofuranosyl-(1→2)-1-O-methyl-β-L-arabinofuranose. In the presence of 1-alkanols, the enzyme demonstrates transglycosylation activity, retaining the anomeric configuration of the arabinofuranose residue. cf. EC, non-reducing end α-L-arabinofuranosidase

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


1. Fujita, K., Takashi, Y., Obuchi, E., Kitahara, K. and Suganuma, T. Characterization of a novel β-L-arabinofuranosidase in Bifidobacterium longum: functional elucidation of a DUF1680 family member. J. Biol. Chem. 289 (2014) 5240–5249. [PMID: 24385433]

[EC created 2013]

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