A Commentary on "Biosynthesis of terpolyesters of 3-hydroxybutyrate, 3-hydroxyvalerate, and 5-hydroxyvalerate in Alcaligenes eutrophus from 5-chloropentanoic and pentanoic acids" by Y. Doi, A. Tamaki, M. Kunioka, K. Soga (Makromol Chem., Rapid Commun. 1987, 8, 631-635)