Ketol-acid reductoisomerase, plant (IPR016206)

Short name: KetolA_reductoisomerase_plant

Overlapping homologous superfamilies


Family relationships


Ketol-acid reductoisomerases (KARI) catalyses two steps in the biosynthesis of branched-chain amino acids. The reaction involves an Mg2+ dependent alkyl migration followed by an NADPH-dependent reduction of the 2-keto group. There are two groups of KARI enzymes: class I is a short form found in fungi and most bacteria, and class II is a long form found in plants and certain bacteria (although their sequences differ) [PMID: 16322583, PMID: 15272168]. However, there has also been a long form found in certain bacteria, but these differ from class II sequences found in plants.

This group represents a ketol-acid reductoisomerase, plant type.

GO terms

Biological Process

GO:0055114 oxidation-reduction process

Molecular Function

GO:0004455 ketol-acid reductoisomerase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.