Glycerol-1-phosphate phosphohydrolase involved in glycerol biosynthesis. Plays a role in osmoadaptation. H2O + sn-glycerol 1-phosphate = glycerol + phosphate H2O + sn-glycerol 3-phosphate = glycerol + phosphate Optimum pH is 6.5. Monomer. By osmotic stress (at protein level). Present with 5000 molecules/cell in log phase SD medium. Belongs to the HAD-like hydrolase superfamily. DOG/GPP family.