alpha-maltohexaose + alpha-D-glucose 1-phosphate => alpha-maltoheptaose + phosphate
alpha-maltohexaose + alpha-d-glucose 1-phosphate => alpha-maltoheptaose + phosphate
alpha-maltohexaose + alpha-D-glucose 1-phosphate => alpha-maltoheptaose + phosphate
alpha-maltohexaose + alpha-d-glucose 1-phosphate => alpha-maltoheptaose + phosphate