InterPro domain: IPR019455

This entry represents the C-terminal domain of the small subunit of acetolactate synthase (the N-terminal domain being an ACT domain). Acetolactate synthase is a tetrameric enzyme, composed of two large and two small subunits, which catalyses the first step in branched-chain amino acid biosynthesis. This reaction is sensitive to certain herbicides [ 1 ].

1. Identification of an acetolactate synthase small subunit gene in two eukaryotes. Gene 190, 245-9