alanine racemase

al·a·nine ra·ce·mase

(al'ă-nēn rā'sē-mās), An enzyme, requiring pyridoxal phosphate as coenzyme, that catalyzes the reversible racemization of l-alanine to d-alanine; found in various microorganisms, where it plays a role in the biosynthesis of the d-amino acids present in the capsular proteins.