ID 3.2.1.187 DE (Ara-f)3-Hyp beta-L-arabinobiosidase. AN beta-L-arabinobiosidase. CA 4-O-(beta-L-arabinofuranosyl-(1->2)-beta-L-arabinofuranosyl-(1->2)-beta- CA L-arabinofuranosyl)-(2S,4S)-4-hydroxyproline + H2O = 4-O-(beta-L- CA arabinofuranosyl)-(2S,4S)-4-hydroxyproline + beta-L-arabinofuranosyl- CA (1->2)-beta-L-arabinofuranose. CC -!- The enzyme, which was identified in the bacterium Bifidobacterium CC longum JCM1217, is specific for (Ara-f)3-Hyp, a sugar chain found in CC hydroxyproline-rich glyoproteins such as extensin and lectin. CC -!- The enzyme was not able to accept (Ara-f)2-Hyp or (Ara-f)4-Hyp as CC substrates. CC -!- In the presence of 1-alkanols, the enzyme demonstrates CC transglycosylation activity, retaining the anomeric configuration of CC the arabinofuranose residue. DR E8MGH9, HYBA2_BIFL2; //