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 D0WGK0
(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)

D0WGK0
ILVC_SLAES
Slackia exigua ATCC 700122
Ketol-acid reductoisomerase (NADP(+))

PDB Structure

PDB 4KQX
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
General approach to reversing ketol-acid reductoisomerase cofactor dependence from NADPH to NADH.
Brinkmann-Chen, S., Flock, T., Cahn, J.K., Snow, C.D., Brustad, E.M., McIntosh, J.A., Meinhold, P., Zhang, L., Arnold, F.H.
Proc.Natl.Acad.Sci.USA
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