Stemar-13-ene synthase

Stemar-13-ene synthase (EC 4.2.3.33, OsDTC2, OsK8, OsKL8, OsKS8, stemarene synthase, syn-stemar-13-ene synthase) is an enzyme with systematic name 9alpha-copalyl-diphosphate diphosphate-lyase (stemar-13-ene-forming).^[1]^[2] This enzyme catalyses the following chemical reaction

9alpha-copalyl diphosphate

\rightleftharpoons

stemar-13-ene + diphosphate

This diterpene cyclase produces stemar-13-ene, a putative precursor of the rice phytoalexin oryzalexin S.

References

↑ Mohan, R.S., Yee, N.K., Coates, R.M., Ren, Y.Y., Stamenkovic, P., Mendez, I. and West, C.A. (1996). "Biosynthesis of cyclic diterpene hydrocarbons in rice cell suspensions: conversion of 9,10-syn-labda-8(17),13-dienyl diphosphate to 9β-pimara-7,15-diene and stemar-13-ene". Arch. Biochem. Biophys. 330: 33–47. doi:10.1006/abbi.1996.0223. PMID 8651702.
↑ Nemoto, T., Cho, E.M., Okada, A., Okada, K., Otomo, K., Kanno, Y., Toyomasu, T., Mitsuhashi, W., Sassa, T., Minami, E., Shibuya, N., Nishiyama, M., Nojiri, H. and Yamane, H. (2004). "Stemar-13-ene synthase, a diterpene cyclase involved in the biosynthesis of the phytoalexin oryzalexin S in rice". FEBS Lett. 571 (1-3): 182–186. doi:10.1016/j.febslet.2004.07.002. PMID 15280039.

External links

Stemar-13-ene synthase at the US National Library of Medicine Medical Subject Headings (MeSH)

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

4.2.3: Acting on phosphates	Threonine synthase

4.2.99: Other	Carboxymethyloxysuccinate lyase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

This article is issued from Wikipedia - version of the Thursday, March 31, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.