3-Isopropylmalate dehydratase

3-Isopropylmalate dehydratase (EC 4.2.1.33) is an aconitase homologue, which catalyses the isomerisation of 2-isopropylmalate to 3-isopropylmalate, via dehydration, in the biosynthesis of leucine.

References

Gross SR, Burns RO, Umbarger HE (1963). "The biosynthesis of leucine. II. The enzymic isomerization of beta-carboxy-beta-hydroxyisocaproate and alpha-hydroxy-beta-carboxyisocaproate". Biochemistry. 2 (5): 1046–52. doi:10.1021/bi00905a023. PMID 14087357.
Calvo JM, Stevens CM, Kalyanpur MG, Umbarger HE (December 1964). "The absolute configuration of alpha-hydroxy-beta-carboxyisocaproic acid (3-isopropylmalic acid), an intermediate in leucine biosynthesis". Biochemistry. 3 (12): 2024–7. doi:10.1021/bi00900a043. PMID 14269331.
Cole FE, Kalyanpur MG, Stevens CM (August 1973). "Absolute configuration of alpha isopropylmalate and the mechanism of its conversion to beta isopropylmalate in the biosynthesis of leucine". Biochemistry. 12 (17): 3346–50. doi:10.1021/bi00741a031. PMID 4270046.

External links

3-isopropylmalate+dehydratase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

v t e Carbon–oxygen lyases (EC 4.2) (primarily dehydratases)
4.2.1: Hydro-Lyases	Carbonic anhydrase Fumarase Aconitase Enolase Alpha Enolase 2 Enoyl-CoA hydratase/3-Hydroxyacyl ACP dehydrase Methylglutaconyl-CoA hydratase Tryptophan synthase Cystathionine beta synthase Porphobilinogen synthase 3-Isopropylmalate dehydratase Urocanase Uroporphyrinogen III synthase Nitrile hydratase
4.2.2: Acting on polysaccharides	Hyaluronate lyase Pectin lyase
4.2.3: Acting on phosphates	Threonine synthase
4.2.99: Other	Carboxymethyloxysuccinate lyase Hydroperoxide lyase

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