Polyhydroxybutyrate: A Useful Product of Chlorotic Cyanobacteria

Polyhydroxybutyrate (PHB) is a carbon polymer with diverse functions, varying greatly on the organism producing it. This microreview describes the current knowledge about PHB metabolism, structure, and different physiological roles with a special focus on cyanobacteria. Despite the physiological fun...

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Bibliographic Details
Published inMicrobial physiology Vol. 31; no. 2; pp. 67 - 77
Main Authors Koch, Moritz, Forchhammer, Karl
Format Journal Article
LanguageEnglish
Published Basel, Switzerland 01.08.2021
Subjects
Review Article
Bacteria
Physiology
Polyhydroxybutyrate
Survival strategies
Cyanobacteria
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Summary:Polyhydroxybutyrate (PHB) is a carbon polymer with diverse functions, varying greatly on the organism producing it. This microreview describes the current knowledge about PHB metabolism, structure, and different physiological roles with a special focus on cyanobacteria. Despite the physiological function of PHB in the cyanobacterial phylum still being unknown, these organisms provide the unique opportunity to directly convert atmospheric CO 2 into bioplastic using a solar-based process. Recent research on PHB metabolism in the cyanobacterial model organism Synechocystis revealed a sophisticated control of PHB granule formation. Novel insights about the metabolic background of PHB synthesis resulted in the engineering of the first cyanobacterial superproducer strain.
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ISSN:2673-1665
2673-1673
DOI:10.1159/000515617