Accession ID	Name	Pfam Type
PF07991	Acetohydroxy acid isomeroreductase, NADPH-binding domain	family

Acetohydroxy acid isomeroreductase catalyses the conversion of acetohydroxy acids into dihydroxy valerates. This reaction is the second in the synthetic pathway of the essential branched side chain amino acids valine and isoleucine. This N-terminal region of the enzyme carries the binding-site for NADPH. The active-site for enzymatic activity lies in the C-terminal part, IlvC, Pfam:PF01450.

Pfam Range: 14-179 DPAM-Pfam Range: 3-189

Uniprot ID: O28294

Pfam Range: 15-178 DPAM-Pfam Range: 4-184

Uniprot ID: Q8DR03

Pfam Range: 14-178 DPAM-Pfam Range: 2-184

Uniprot ID: Q8RDK4

References

1: The crystal structure of plant acetohydroxy acid isomeroreductase complexed with NADPH, two magnesium ions and a herbicidal transition state analog determined at 1.65 A resolution. Biou V, Dumas R, Cohen-Addad C, Douce R, Job D, Pebay-Peyroula E; EMBO J 1997;16:3405-3415. PMID:9218783

2: The crystal structure of a bacterial class II ketol-acid reductoisomerase: domain conservation and evolution. Tyagi R, Duquerroy S, Navaza J, Guddat LW, Duggleby RG; Protein Sci. 2005;14:3089-3100. PMID:16322583

3: Conformational changes in a plant ketol-acid reductoisomerase upon Mg(2+) and NADPH binding as revealed by two crystal structures. Leung EW, Guddat LW; J Mol Biol. 2009;389:167-182. PMID:19362563