EC 4.2.2.3 CAZY Family: PL7 Recombinant. From Sphingomonas sp. In 3.2 M ammonium sulphate. Endo-acting β-elimination cleavage of the polysaccharide, alginate. Specific activity: ~ 120 U/mg (40°C, pH 7.2 on sodium alginate). Store at 4°C.