ID 5.1.1.19 DE O-ureido-serine racemase. CA O-ureido-L-serine = O-ureido-D-serine. CC -!- The enzyme employs a two-base mechanism, with a thiolate-thiol pair CC in the active site. CC -!- It participates in the biosynthetic pathway of D-cycloserine, CC an antibiotic substance produced by several Streptomyces species. DR D2Z026, DCSC_STRLA ; //