Thus , the two substrates of this enzyme are 6 - phospho - beta - D - galactoside and H O , .
Beta - D - galactoside 's two products are 6 - phospho - D - galactose and alcohol .
Thus , the two substrates of this enzyme are 6 - phospho - beta - D - galactoside and H O , whereas its two products are 6 - phospho - D - galactose and alcohol .