ID 3.2.1.198 DE alpha-mannan endo-1,2-alpha-mannanase. CA Hydrolysis of the terminal alpha-D-mannosyl-(1->3)-alpha-D-mannose CA disaccharide from alpha-D-mannosyl-(1->3)-alpha-D-mannosyl-(1->2)-alpha- CA D-mannosyl-(1->2)-alpha-D-mannosyl side chains in fungal cell wall alpha- CA mannans. CC -!- The enzyme, characterized from the gut bacteria Bacteroides CC thetaiotaomicron and Bacteroides xylanisolvens, can also catalyze the CC reaction of EC 3.2.1.130. //