本酶催化的反应为Endohydrolysis Of The beta-Ketopyranosidic Linkages Of 3-Deoxy-D-Manno-2-Octulosonate In Capsular Polysaccharides,系统名称为Capsular-Polysaccharide 3-Deoxy-D-Manno-2-Octulosonohydrolase,来自噬菌体的酶催化大肠杆菌(Escherichia coli)细胞壁中含 3-脱氧-2-辛酮糖酸(3-deoxy-2-octulosonide)的荚膜多糖的解聚。