A flavoprotein enzyme that catalyzes the formation of acetolactate from 2 moles of PYRUVATE in the biosynthesis of VALINE and the formation of acetohydroxybutyrate from pyruvate and alpha-ketobutyrate in the biosynthesis of ISOLEUCINE. This enzyme was formerly listed as EC 4.1.3.18.
Also Known As:
Acetohydroxyacid Synthetase I; Acetoxyhydroxyacid Synthase III; Acid Synthase, Acetohydroxy; Acid Synthetase, Acetohydroxy; Synthase III, Acetoxyhydroxyacid; Synthase, Acetohydroxy Acid; Synthase, Acetolactate; Synthetase I, Acetohydroxyacid; Synthetase, Acetohydroxy Acid; Synthetase, Acetolactate; Acetohydroxy Acid Synthase; Acetohydroxy Acid Synthetase; Acetolactate Synthetase; Acetolactate pyruvate-lyase (carboxylating)