A dimeric (a large and a small chain) or tetrameric (two large and two small chains) enzyme complex. Catalyzes the formation of acetolactate from pyruvate.
Source:BRENDA:2.2.1.6,
GOC:jl,
PMID:16458324,
PMID:8756689
Comment
See also the molecular function term 'acetolactate synthase activity ; GO:0003984'.