EC 3.2.1.99 CAZY Family: GH43 From A. niger. In 3.2 M ammonium sulphate. Specific activity: 9.0 U/mg (40°C, pH 4.0 on CM-linear 1,5-α-L-arabinan). Contaminants: α-L-arabinofuranosidase < 0.01% (on beet arabinan); endo-galactanase < 0.01%. Store at 4°C.