https://pages.htgaa.org/2026b/radi-khodr/week-01-hw-course-overview-and-intro/index.htmlZa’atar One زعتر — choosing which isomer the za’atar pathway makes. Thymol and carvacrol are the same molecule with the hydroxyl in a different place. One cytochrome P450 decides which. Nobody has learned to tell it what to do and perhaps Origanum syriacum, the za’atar of the Levant, already has the answer.Hugoen