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ABSTRACT: Background
Pretreatment processes and subsequent enzymatic hydrolysis are prerequisites to utilize lignocellulosic sugar for fermentation. However, the resulting hydrolysate frequently hinders fermentation processes due to the presence of inhibitors and toxic products (e.g., ethanol). Thus, it is crucial to develop robust microbes conferring multi-stress tolerance.Results
Zmo0994, a functionally uncharacterized protein from Zymomonas mobilis, was identified and characterized for the first time. A major effect of Zmo0994 was a significant enhancement in the tolerance to abiotic stresses such as ethanol, furfural, 5'-hydroxymethylfurfural and high temperature, when expressed in Escherichia coli. Through transcriptome analysis and in vivo experiments, the cellular mechanism of this protein was revealed as due to its ability to trigger genes, involved in aerobic respiration for ATP synthesis.Conclusions
These findings have significant implications that might lead to the development of robust microbes for the highly efficient industrial fermentation processes.
SUBMITTER: Yang J
PROVIDER: S-EPMC7448490 | biostudies-literature | 2020
REPOSITORIES: biostudies-literature
Yang Jungwoo J Kim Ha Eun HE Jung Young Hoon YH Kim Jungyeon J Kim Do Hyoung DH Walmsley Adrian R AR Kim Kyoung Heon KH
Biotechnology for biofuels 20200826
<h4>Background</h4>Pretreatment processes and subsequent enzymatic hydrolysis are prerequisites to utilize lignocellulosic sugar for fermentation. However, the resulting hydrolysate frequently hinders fermentation processes due to the presence of inhibitors and toxic products (e.g., ethanol). Thus, it is crucial to develop robust microbes conferring multi-stress tolerance.<h4>Results</h4>Zmo0994, a functionally uncharacterized protein from <i>Zymomonas mobilis</i>, was identified and characteriz ...[more]