alpha-maltotetraose + alpha-D-glucose 1-phosphate => alpha-maltopentaose + phosphate
alpha-maltotetraose + alpha-d-glucose 1-phosphate => alpha-maltopentaose + phosphate
alpha-maltotetraose + alpha-D-glucose 1-phosphate => alpha-maltopentaose + phosphate
alpha-maltotetraose + alpha-d-glucose 1-phosphate => alpha-maltopentaose + phosphate