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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제20권 제7호
- 발행연도
- 2010.1
- 수록면
- 1,156 - 1,162 (7page)
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초록· 키워드
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During ethanol fermentation, bacterial strains may encounter various stresses, such as ethanol and acid shock,which adversely affect cell viability and the production of ethanol. Therefore, ethanologenic strains that tolerate abiotic stresses are highly desirable. Bacteria of the genus Deinococcus are extremely resistant to ionizing radiation,ultraviolet light, and desiccation, and therefore constitute an important pool of extreme resistance genes. The irrE gene encodes a general switch responsible for the extreme radioresistance of D. radiodurans. Here, we present evidence that IrrE, acting as a global regulator, confers high stress tolerance to a Zymomonas mobilis strain.
Expression of the gene protected Z. mobilis cells against ethanol, acid, osmotic, and thermal shocks. It also markedly improved cell viability, the expression levels and enzyme activities of pyruvate decarboxylase and alcohol dehydrogenase,and the production of ethanol under both ethanol and acid stresses. These data suggest that irrE is a potentially promising gene for improving the abiotic stress tolerance of ethanologenic bacterial strains.
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참고문헌 (23)
참고문헌 신청
Alper, H / 2005 / Construction of lycopene-overproducing E. coli strains by combining systematic and combinatorial gene knockout targets / Nat. Biotechnol 23 : 612 ~ 616
Alper, H / 2005 / Identifying gene targets for the metabolic engineering of lycopene biosynthesis in Escherichia coli / Metab. Eng 7 : 155 ~ 164
Alper, H / 2007 / Global transcription machinery engineering: A new approach for improving cellular phenotype / Metab. Eng 9 : 258 ~ 267
Barnell, W. O / 1990 / Sequence and genetic organization of a Zymomonas mobilis gene cluster that encodes several enzymes of glucose metabolism / J. Bacteriol 172 : 7227 ~ 72
Baumler, D. J / 2006 / Enhancement of acid tolerance in Zymomonas mobilis by a proton-buffering peptide / Appl. Biochem. Biotechnol 134 : 15 ~ 26
Alper, H / 2005 / Identifying gene targets for the metabolic engineering of lycopene biosynthesis in Escherichia coli / Metab. Eng 7 : 155 ~ 164
Alper, H / 2007 / Global transcription machinery engineering: A new approach for improving cellular phenotype / Metab. Eng 9 : 258 ~ 267
Barnell, W. O / 1990 / Sequence and genetic organization of a Zymomonas mobilis gene cluster that encodes several enzymes of glucose metabolism / J. Bacteriol 172 : 7227 ~ 72
Baumler, D. J / 2006 / Enhancement of acid tolerance in Zymomonas mobilis by a proton-buffering peptide / Appl. Biochem. Biotechnol 134 : 15 ~ 26
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Effect of Different Pretreatment Methods on the Bioconversion of Rice Bran into Ethanol
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Five Computer Simulation Studies of Whole-Genome Fragment Assembly: The Case of Assembling Zymomonas mobilis ZM4 Sequences
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