Enzyme and metabolic engineering for the production of novel biopolymers: crossover of biological and chemical processes

► Poly(ω-hydroxy fatty acids) are polyethylene-like biobased polyester. ► Medium-chain-length polyhydroxyalkanoate homopolymers are processed to stretchy film. ► Microbial lactate-based polyesters exhibit transparent and flexible properties. ► Enzyme and metabolic engineering facilitates the expanding of bio-based polymers.