acetolactate synthetase Acetolactate synthase 3, chloroplastic SH11 acetohydroxyacid synthase acetohydroxyacid synthase III Acetohydroxy-acid synthase III actohydroxyacid synthase I ALS1 ALS2 acetolactate synthase 3, chloroplastic Acetolactate synthase III ALS III actohydroxyacid synthase 1 ALS I Acetohydroxy-acid synthase I Acetolactate synthase I