The enzyme 3-chloro-D-alanine dehydrochlorinase (EC 4.5.1.2) catalyzes the reaction3-chloro-D-alanine + H2O = pyruvate + chloride + NH3 (overall reaction) (1a) 3-chloro-D-alanine = chloride + 2-aminoprop-2-enoate (1b) 2-aminoprop-2-enoate = 2-iminopropanoate (spontaneous) (1c) 2-iminopropanoate + H2O = pyruvate + NH3 (spontaneous)