| EC:1.1.1.85 3-isopropylmalate dehydrogenase. | TG | PF | CP | HS |
| EC:1.1.1.86 Ketol-acid reductoisomerase. | TG | PF | CP | HS |
| EC:1.2.4.1 Pyruvate dehydrogenase (acetyl-transferring). | TG | PF | CP | HS |
| EC:1.4.1.9 Leucine dehydrogenase. | TG | PF | CP | HS |
| EC:2.2.1.6 Acetolactate synthase. | TG | PF | CP | HS |
| EC:2.3.3.13 2-isopropylmalate synthase. | TG | PF | CP | HS |
| EC:2.6.1.6 Leucine transaminase. | TG | PF | CP | HS |
| EC:2.6.1.42 Branched-chain amino acid transaminase. | TG | PF | CP | HS |
| EC:2.6.1.66 Valine--pyruvate transaminase. | TG | PF | CP | HS |
| EC:4.2.1.9 Dihydroxy-acid dehydratase. | TG | PF | CP | HS |
| EC:4.2.1.33 3-isopropylmalate dehydratase. | TG | PF | CP | HS |
| EC:5.4.99.3 2-acetolactate mutase. | TG | PF | CP | HS |
| EC:6.1.1.4 Leucine--tRNA ligase. | TG | PF | CP | HS |
| EC:6.1.1.5 Isoleucine--tRNA ligase. | TG | PF | CP | HS |
| EC:6.1.1.9 Valine--tRNA ligase. | TG | PF | CP | HS |