acetolactate synthase activity https://github.com/geneontology/go-ontology/issues/28613 https://github.com/geneontology/go-ontology/issues/28938 https://github.com/geneontology/go-ontology/issues/30193 acetohydroxyacid synthase activity molecular_function alpha-acetohydroxy acid synthetase activity alpha-acetolactate synthase activity acetohydroxy acid synthetase activity GO:0003984 RHEA:25249 MetaCyc:ACETOLACTSYN-RXN acetolactate pyruvate-lyase (carboxylating) activity EC:2.2.1.6 alpha-acetohydroxyacid synthase activity acetolactic synthetase activity Catalysis of the reaction: H+ + 2 pyruvate = (2S)-2-acetolactate + CO2. Can also convert 2-oxobutanoate and pyruvate to (S)-2-ethyl-2-hydroxy-3-oxobutanoate. pyruvate:pyruvate acetaldehydetransferase (decarboxylating) alpha-acetolactate synthetase activity RHEA:27654 transketolase or transaldolase activity