ID 2.4.1.374 DE beta-1,2-mannooligosaccharide synthase. CA [(1->2)-beta-D-mannosyl](n) + GDP-alpha-D-mannose = [(1->2)-beta-D- CA mannosyl](n+1) + GDP + H(+). CC -!- The enzyme, characterized from Leishmania parasites, is involved in CC synthesis of mannogen, a beta-(1->2)-mannan oligosaccharide used by CC the organisms as a carbohydrate reserve. //