Proposed metabolic pathways for synthesis of the different monomers observed in the PHAs produced by GAOs in this study. ED, Entner-Doudoroff pathway; TCA, tricarboxylic acid cycle; CoA, coenzyme A; CoASH, reduced form of CoA; ACP, acyl carrier protein; ACPSH, reduced form of ACP; FADH2, flavin adenine dinucleotide (reduced form).