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Engineering Biosynthesis Mechanisms for Diversifying Polyhydroxyalkanoates.

Guo-Qiang Chen¹, Ivan Hajnal², Hong Wu²

¹Ministry of Education Key Lab of Bioinformatics, School of Life Sciences, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing, 100084, China; Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Protein Therapeutics, Tsinghua University, Beijing 100084, China.

Trends in Biotechnology

|September 28, 2015

Summary

This summary is machine-generated.

Polyhydroxyalkanoates (PHA) are diverse bacterial biopolyesters. Engineering synthesis pathways and PHA synthase specificity allows tailored PHA structures for various applications.

Keywords:

PHA PHB biopolymers synthetic biology β-oxidation

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Area of Science:

Biotechnology
Polymer Science
Microbiology

Background:

Polyhydroxyalkanoates (PHA) are a versatile family of bacterial biopolyesters.
PHA diversity arises from variations in monomers, leading to homopolymers, copolymers, and functional polymers.

Purpose of the Study:

To explore the engineering of PHA synthesis pathways for tailored biopolyester structures.
To highlight the potential of advanced PHA production technologies for diverse applications.

Main Methods:

Engineering of three core PHA synthesis pathways: acetoacetyl-CoA pathway, in situ fatty acid synthesis, and β-oxidation cycles.
Manipulation of PHA synthase specificity.
Application of genome editing and process engineering for structural tailoring.

Main Results:

Demonstrated ability to generate diverse PHA structures, including homopolymers, random and block copolymers, and functional polymers.
Established methods for tailoring PHA composition through genetic and process modifications.
Advancement in PHA production technology enabling greater structural control.

Conclusions:

Engineered PHA synthesis pathways and synthase specificity significantly expand biopolyester diversity.
Tailored PHA structures are achievable via genome editing and process engineering.
Maturing PHA production technology facilitates research into cost-effective and high-value applications.