Isolated from the bacterium Streptomyces avermitilis and present in many other Streptomyces species. Part of the pathway for pentalenolactone biosynthesis.
Pentalenolactone biosynthesis: Molecular cloning and assignment of biochemical function to PtlF, a short-chain dehydrogenase from Streptomyces avermitilis, and identification of a new biosynthetic intermediate.