An updated overview on the regulatory circuits of polyhydroxyalkanoates synthesis.

Ruchira Mitra, Tong Xu, Guo-Qiang Chen, Hua Xiang, Jing Han

Microbial biotechnology 2022 May

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Polyhydroxyalkanoates (PHA) are a promising and sustainable alternative to the petroleum-based synthetic plastics. Regulation of PHA synthesis is receiving considerable importance as engineering the regulatory factors might help developing strains with improved PHA-producing abilities. PHA synthesis is dedicatedly regulated by a number of regulatory networks. They tightly control the PHA content, granule size and their distribution in cells. Most PHA-accumulating microorganisms have multiple regulatory networks that impart a combined effect on PHA metabolism. Among them, several factors ranging from global to specific regulators, have been identified and characterized till now. This review is an attempt to categorically summarize the diverse regulatory circuits that operate in some important PHA-producing microorganisms. However, in several organisms, the detailed mechanisms involved in the regulation of PHA synthesis is not well-explored and hence further research is needed. The information presented in this review might help researcher to identify the prevailing research gaps in PHA regulation. © 2021 The Authors. Microbial Biotechnology published by Society for Applied Microbiology and John Wiley & Sons Ltd.

Citation

Ruchira Mitra, Tong Xu, Guo-Qiang Chen, Hua Xiang, Jing Han. An updated overview on the regulatory circuits of polyhydroxyalkanoates synthesis. Microbial biotechnology. 2022 May;15(5):1446-1470