Identification of Bacillus selenitireducens MLS10 maltose phosphorylase possessing synthetic ability for branched α-d-glucosyl trisaccharides

► A unique maltose phosphorylase utilizing glucobioses as acceptor was identified. ► The structures of products were identified as branched α-d-glucosyl trisaccharides. ► The enzyme was suggested to possess a binding site for C2 substituent of d-glucose.