D-maltohexaose + H2O <=> D-maltopentaose + alpha-D-glucose
d-maltohexaose + h2o <=> d-maltopentaose + alpha-d-glucose
D-maltohexaose + H2O <=> D-maltopentaose + alpha-D-glucose
d-maltohexaose + h2o <=> d-maltopentaose + alpha-d-glucose