ID 2.3.3.6 DE 2-ethylmalate synthase. AN (R)-2-ethylmalate 2-oxobutanoyl-lyase (CoA-acetylating). AN 2-ethylmalate-3-hydroxybutanedioate synthase. AN propylmalate synthase. AN propylmalic synthase. CA 2-oxobutanoate + acetyl-CoA + H2O = (R)-2-ethylmalate + CoA + H(+). CC -!- Also acts on (R)-2-(n-propyl)-malate. CC -!- Formerly EC 4.1.3.33. //