1.1.1.223 metabolism the enzyme is involved in the biosynthetic pathways of oil constituents (PA-type, PT-type, and PK-type) in Perilla, putative pathways, overview -, 740127 1.1.1.223 metabolism the enzyme is involved in the biosynthetic pathways of oil constituents (PA-type, PT-type, and PK-type) in Perilla, putative pathways, overview. (-)-cis-Isopiperitenol is an intermediate for the piperitenone biosynthesis of perilla -, 740127 1.1.1.223 physiological function isozyme ISPD1 is less likely to be involved in oxidation of isopiperitenol -, 740127 1.1.1.223 physiological function isozyme ISPD2 is likely to be involved in oxidation of isopiperitenol -, 740127