Recent advances in engineering non-native microorganisms for poly(3-hydroxybutyrate) production.

Area of Science:

• Biotechnology
• Polymer Science
• Microbiology

Background:

• Poly(3-hydroxybutyrate) (PHB) is a biodegradable, non-toxic polymer from the polyhydroxyalkanoate (PHA) family.
• PHB offers a sustainable alternative to petroleum-based plastics due to its synthesis from renewable resources.
• Its biocompatibility makes PHB suitable for medical and biomedical applications.

Purpose of the Study:

• To review non-native microbial hosts engineered for Poly(3-hydroxybutyrate) (PHB) production.
• To discuss metabolic engineering strategies for enhancing PHB yields.
• To highlight advancements in synthetic biology for biopolymer synthesis.

Main Methods:

• Comprehensive literature review of non-native microbial hosts for PHB biosynthesis.
• Analysis of metabolic engineering techniques including cofactor engineering, pathway reconstruction, and cell morphology modification.
• Examination of genome editing tools like CRISPR/Cas9 for host modification.

Main Results:

• Identified various non-native microorganisms engineered for PHB production.
• Demonstrated effectiveness of metabolic engineering strategies in boosting PHB yields.
• Highlighted successful industrial-scale PHB production using Escherichia coli as a non-native host.

Conclusions:

• Engineered non-native microorganisms offer a viable route for sustainable PHB production.
• Metabolic engineering and synthetic biology tools are crucial for optimizing biopolymer synthesis.
• Further genetic advancements are necessary to improve the efficiency of non-native hosts for large-scale PHB manufacturing.