The Enzyme Database

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Accepted name: isopentenyl-diphosphate Δ-isomerase
Reaction: 3-methylbut-3-en-1-yl diphosphate = prenyl diphosphate
For diagram of terpenoid biosynthesis, click here
Other name(s): isopentenylpyrophosphate Δ-isomerase; methylbutenylpyrophosphate isomerase; isopentenylpyrophosphate isomerase; isopentenyl-diphosphate Δ32-isomerase
Systematic name: 3-methylbut-3-en-1-yl-diphosphate Δ32-isomerase
Comments: The enzyme from Streptomyces sp. strain CL190 requires FMN and NAD(P)H as cofactors. Activity is reduced if FMN is replaced by FAD, but the enzyme becomes inactive when NAD(P)H is replaced by NAD+ or NADP+. That enzyme also requires Mg2+, Mn2+ or Ca2+ for activity.
Links to other databases: BRENDA, EXPASY, Gene, GTD, KEGG, MetaCyc, PDB, CAS registry number: 9033-27-6
1.  Kaneda, K., Kuzuyama, T., Takagi, M., Hayakawa, Y. and Seto, H. An unusual isopentenyl diphosphate isomerase found in the mevalonate pathway gene cluster from Streptomyces sp. strain CL190. Proc. Natl. Acad. Sci. USA 98 (2001) 932–937. [DOI] [PMID: 11158573]
2.  Bishop, J.M. Cellular oncogenes and retroviruses. Annu. Rev. Biochem. 52 (1983) 301–354. [DOI] [PMID: 6351725]
3.  Agranoff, B.W., Eggerer, H., Henning, U. and Lynen, F. Biosynthesis of terpenes. VII. Isopentenyl pyrophosphate isomerase. J. Biol. Chem. 235 (1960) 326–332. [PMID: 13792054]
[EC created 1961, modified 2002]

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