Ent-cassa-12,15-diene synthase

Ent-cassa-12,15-diene synthase (EC 4.2.3.28, OsDTC1, OsKS7) is an enzyme with systematic name ent-copalyl-diphosphate diphosphate-lyase (ent-cassa-12,15-diene-forming).^[1] This enzyme catalyses the following chemical reaction

ent-copalyl diphosphate

\rightleftharpoons

ent-cassa-12,15-diene + diphosphate

This class I diterpene cyclase produces ent-cassa-12,15-diene, a precursor of the rice phytoalexins (-)-phytocassanes A-E.

References

↑ Cho, E.M., Okada, A., Kenmoku, H., Otomo, K., Toyomasu, T., Mitsuhashi, W., Sassa, T., Yajima, A., Yabuta, G., Mori, K., Oikawa, H., Toshima, H., Shibuya, N., Nojiri, H., Omori, T., Nishiyama, M. and Yamane, H. (2004). "Molecular cloning and characterization of a cDNA encoding ent-cassa-12,15-diene synthase, a putative diterpenoid phytoalexin biosynthetic enzyme, from suspension-cultured rice cells treated with a chitin elicitor". Plant J. 37: 1–8. doi:10.1046/j.1365-313x.2003.01926.x. PMID 14675427.

External links

Ent-cassa-12,15-diene 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)

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