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 name9α-copalyl-diphosphate diphosphate-lyase (stemar-13-ene-forming).[1][2] This enzyme catalyses the following chemical reaction
This diterpene cyclase produces stemar-13-ene, a putative precursor of the rice phytoalexin oryzalexin S.
References
^Mohan RS, Yee NK, Coates RM, Ren YY, Stamenkovic P, Mendez I, West CA (June 1996). "Biosynthesis of cyclic diterpene hydrocarbons in rice cell suspensions: conversion of 9,10-syn-labda-8(17),13-dienyl diphosphate to 9beta-pimara-7,15-diene and stemar-13-ene". Archives of Biochemistry and Biophysics. 330 (1): 33–47. doi:10.1006/abbi.1996.0223. PMID8651702.