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CATH Classification

Domain Context

CATH Clusters

Superfamily NAD(P)-binding Rossmann-like Domain
Functional Family Ketol-acid reductoisomerase (NADP(+))

Enzyme Information

1.1.1.86
Ketol-acid reductoisomerase (NADP(+)).
based on mapping to UniProt Q9HVA2
(1) (2R)-2,3-dihydroxy-3-methylbutanoate + NADP(+) = (2S)-2-hydroxy-2- methyl-3-oxobutanoate + NADPH. (2) (2R,3R)-2,3-dihydroxy-3-methylpentanoate + NADP(+) = (S)-2-hydroxy-2- ethyl-3-oxobutanoate + NADPH.
-!- The enzyme, found in many bacteria and archaea, is specific for NADPH (cf. EC 1.1.1.382 and EC 1.1.1.383). -!- Formerly EC 1.1.1.89.

UniProtKB Entries (1)

Q9HVA2
ILVC_PSEAE
Pseudomonas aeruginosa PAO1
Ketol-acid reductoisomerase (NADP(+))

PDB Structure

PDB 1NP3
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal Structure of Class I Acetohydroxy Acid Isomeroreductase from Pseudomonas aeruginosa
Ahn, H.J., Eom, S.J., Yoon, H.-J., Lee, B.I., Cho, H., Suh, S.W.
J.Mol.Biol.
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