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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제19권 제10호
- 발행연도
- 2009.1
- 수록면
- 1,127 - 1,134 (8page)
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Escherichia coli excretes acetate during aerobic growth on
glycolytic carbon sources, which has been explained as an
overflow metabolism when the carbon flux into the cell
exceeds the capacity of central metabolic pathways. Nonacetogenic
growth of E. coli on gluconeogenic carbon
sources like succinate or in carbon-limited slow growth
conditions is believed an evidence for the explanation.
However, we found that a strain defected in the acs (acetyl
Co-A synthetase) gene, the product of which is involved in
scavenging acetate, accumulated acetate even in succinate
medium and in carbon-limited low growth rate condition,
where as its isogenic parental strain did not. The acs
promoter was inducible in noncatabolite repression condition,
whereas the expression of the ackA-pta operon encoding
acetate kinase and phosphotransacetylase for acetate
synthesis was constitutive. Results in this study suggest
that E. coli excretes and scavenges acetate simultaneously
in the carbon-limited low growth condition and in nonacetogenic
carbon source, and the activity of the acetate
consumption pathway directly affects the accumulation
level of acetate in the culture broth.
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참고문헌 (22)
참고문헌 신청
Andersen, K. B. / 1980 / Are growth rates of Escherichia coli in batch cultures limited by respiration? / J. Bacteriol 144 : 114 ~ 123
Balbas, P. / 1996 / A pBRINT family of plasmids for integration of cloned DNA into the Escherichia coli chromosome / Gene 172 : 65 ~ 69
Brown, T. D. / 1977 / The enzymic interconversion of acetate and acetylcoenzyme A in Escherichia coli / J. Gen. Microbiol 102 : 327 ~ 336
Chang, Y. Y. / 1994 / Expression of Escherichia coli pyruvate oxidase (PoxB) depends on the sigma factor encoded by the rpoS(katF) gene / Mol. Microbiol 11 : 1019 ~ 1028
Diaz-Ricci, J. C. / 1990 / Comparative studies of glucose catabolism by Escherichia coli grown in a complex medium under aerobic and anaerobic conditions / Biotechnol. Prog 6
Balbas, P. / 1996 / A pBRINT family of plasmids for integration of cloned DNA into the Escherichia coli chromosome / Gene 172 : 65 ~ 69
Brown, T. D. / 1977 / The enzymic interconversion of acetate and acetylcoenzyme A in Escherichia coli / J. Gen. Microbiol 102 : 327 ~ 336
Chang, Y. Y. / 1994 / Expression of Escherichia coli pyruvate oxidase (PoxB) depends on the sigma factor encoded by the rpoS(katF) gene / Mol. Microbiol 11 : 1019 ~ 1028
Diaz-Ricci, J. C. / 1990 / Comparative studies of glucose catabolism by Escherichia coli grown in a complex medium under aerobic and anaerobic conditions / Biotechnol. Prog 6
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