The enzyme 6-phospho-β-galactosidase catalyzes the following reaction: a 6-phospho-β-D-galactoside + H2O ⇌ {\displaystyle \rightleftharpoons } 6-phospho-D-galactose + an alcoholThis enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. Wikipedia