Phytoenoic and phytodienoic acids are cyclopentenone oxylipins biosynthesized in plants from linoleic acid.1,2,3 Cyclopentenones are converted to cyclopentanones by reductases, as occurs in the jasmonic acid pathway.2 CAY10696 is a 12-carbon cyclopentanone that is structurally related to a variety of plant oxylipins. Its physiological actions are not known.
References
1. Ogorodnikova, A.V., Gorina, S.S., Mukhtarova, L.S., et al. Stereospecific biosynthesis of (9S,13S)-10-oxo-phytoenoic acid in young maize roots. Biochimica et Biophysica Acta (2015).
2. Schaller, A., and Stintzi, A. Enzymes in jasmonate biosynthesis - Structure, function, regulation. Phytochemistry 70, 1532-1538 (2009).
3. Grechkin, A.N., Mukhtarova, L.S., Latypova, L.R., et al. Tomato CYP74C3 is a multifunctional enzyme not only synthesizing allene oxide but also catalyzing its hydrolysis and cyclization. ChemBioChem 9, 2498-2505 (2008).