the hydrolysis occurs in two steps : the first is the conversion of udp-galactose to galactose-1-phosphate catalyzed by nucleotide pyrophosphatase ( ec 3.6.1.9 ) , and the second is the conversion of the latter to free galactose by alkaline phosphatase ( ec 3.1.3.1 ) .
C0020291
hydrolysis
C0002059
alkaline