Reaction also occurs with esters of other short-chain-length (C1-C5) hydroxyalkanoic acids (HA). There are two types of polymers: native (intracellular) granules are amorphous and have an intact surface layer; denatured (extracellular) granules either have no surface layer or a damaged surface layer and are partially crystalline.
Jendrossek, D. Microbial degradation of polyesters. Adv. Biochem. Eng./Biotechnol.71 (2001) 293–325. [PMID: 11217416]
García, B., Olivera, E.R., Miñambres, B., Fernández-Valverde, Cañedo, L.M., Prieto, M.A., García, J.L., Martínez, M. and Luengo, J.M. Novel biodegradable aromatic plastics from a bacterial source. Genetic and biochemical studies on a route of the phenylacetyl-CoA catabolon. J. Biol. Chem.274 (1999) 29228–29241. [DOI] [PMID: 10506180]