EC 3.2.1.55 CAZY family: GH51 Recombinant. From Cellvibrio japonicus In 3.2 M ammonium sulphate. Specific activity: 21 U/mg protein on p-nitrophenyl-α-L-arabinofuranoside at pH 5.5 and 40oC. Stable at 4oC for ~ 4 years.