Definition: An enzyme that catalyzes the biosynthesis of cysteine in microorganisms and plants from O-acetyl-L-serine and hydrogen sulfide. This enzyme was formerly listed as EC 4.2.99.8.
Other names O-Acetylserine Sulfhydrylase; Sulfhydrylase, O-Acetylserine; O Acetylserine Sulfhydrylase; O-Acetylserine (Thiol)-Lyase; Cysteine Synthase A