UlaG a putative l-ascorbate-6-P lactonase and related proteins; MBL-fold metallo hydrolase domain
UlaG is essential for L-ascorbate utilization under anaerobic conditions; it is a putative l-ascorbate-6-P lactonase thought to catalyze the hydrolysis of L-ascorbate-6-phosphate to 3-keto-L-gulonate-6-phosphate. Members of this subgroup belong to the MBL-fold metallo-hydrolase superfamily which is comprised mainly of hydrolytic enzymes which carry out a variety of biological functions.