The enzyme, characterized from the the plant Sorghum bicolor, is involved in the biosynthesis of sorgoleone, an allelopathic compound produced in root hair cells. The enzyme inserts a cis double bond at carbon 15. When acting on its natural substrate, (9Z,12Z)-hexadeca-9,12-dienoyl-CoA, it produces a product with a terminal double bond.
Pan, Z., Rimando, A.M., Baerson, S.R., Fishbein, M. and Duke, S.O. Functional characterization of desaturases involved in the formation of the terminal double bond of an unusual 16:3Δ(9,12,15) fatty acid isolated from Sorghum bicolor root hairs. J. Biol. Chem.282 (2007) 4326–4335. [DOI] [PMID: 17178719]