Patent ID: 7326553

Claim:
An isolated maltose-1-phosphate-producing enzyme which has an amino acid sequence that is at least 90% homologous to SEQ ID NO: 2 and the following enzymatic characteristics; 1) Action: producing maltose-1-phosphate from a phosphoric acid or a salt thereof and an oligosaccharide or polysaccharide containing an α-1,4-glycosidic bond and having a glucose polymerization degree of 5 or more, 2) Substrate specificity: in the presence of a phosphoric acid or a salt thereof, effectively acting on oligosaccharide or polysaccharide containing an α-1,4-glucosidic bond and having a glucose polymerization degree of 6 or more thereby producing maltose-1-phosphate; weakly acting on an oligosaccharide having a glucose polymerization degree of 5; and exhibiting substantially no action on an oligosaccharide having a polymerization degree of 2 to 4, 3) Molecular weight: about 75 kDa (SDS-PAGE), 4) Optimum pH: 6.5 to 8.0, and 5) Optimum temperature: 35 to 50° C.