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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 29 - 39 (11page)
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Vibrio vulnificus needs various responsive mechanisms to survive and transmit successfully in alternative niches of human and marine environments, and to ensure the acquisition of steady energy supply to facilitate such unique life style. The bacterium had genetic constitution very different from that of Escherichia coli regarding metabolism of glycogen, a major energy reserve. V. vulnificus accumulated more glycogen than other bacteria and at various levels according to culture medium and carbon source supplied in excess. Glycogen was accumulated to the highest level in Luria-Bertani (3.08 mg/mg protein) and heart infusion (4.30 mg/mg protein) complex media supplemented with 1% (w/v) maltodextrin at 3 h into the stationary phase. Regarding effect of carbon source, more glycogen was accumulated when maltodextrin (2.34 mg/mg protein) was added than when glucose or maltose (0.78−1.14 mg/mg protein) was added as an excessive carbon source to M9 minimal medium, suggesting that maltodextrin metabolism might affect glycogen metabolism very closely. These results were supported by the analysis using the malP (encoding a maltodextrin phosphorylase) and malQ (encoding a 4-α-glucanotransferase) mutants, which accumulated much less glycogen than wild type when either glucose or maltodextrin was supplied as an excessive carbon source, but at different levels (3.1−80.3% of wild type glycogen). Therefore, multiple pathways for glycogen metabolism were likely to function in V. vulnificus and that responding to maltodextrin might be more efficient in synthesizing glycogen. All of the glycogen samples from 3 V. vulnificus strains under various conditions showed a narrow side chain length distribution with short chains (G4−G6) as major ones. Not only the comparatively large accumulation volume but also the structure of glycogen in V. vulnificus, compared to other bacteria, may explain durability of the bacterium in external environment.
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참고문헌 (34)
참고문헌 신청
Tison DL / 1986 / Virulence of Vibrio vulnificus strains from marine environments / Appl. Environ. Microbiol. 51:1004~1006
Chen CY / 2003 / Comparative genome analysis of Vibrio vulnificus, a marine pathogen / Genome Res. 13:2577~2587
Wallington J / 2008 / The control of hepatic glycogen metabolism in an in vitro model of sepsis / Mol. Cell. Biochem. 308:183~192
Park SD / 1991 / Vibrio vulnificus septicemia in Korea: clinical and epidemiologic findings in seventy patients / J. Am. Acad. Dermatol. 24:397~403
Schild S / 2007 / Genes induced late in infection increase fitness of Vibrio cholerae after release into the environment / Cell Host Microbe. 2:264~277
Chen CY / 2003 / Comparative genome analysis of Vibrio vulnificus, a marine pathogen / Genome Res. 13:2577~2587
Wallington J / 2008 / The control of hepatic glycogen metabolism in an in vitro model of sepsis / Mol. Cell. Biochem. 308:183~192
Park SD / 1991 / Vibrio vulnificus septicemia in Korea: clinical and epidemiologic findings in seventy patients / J. Am. Acad. Dermatol. 24:397~403
Schild S / 2007 / Genes induced late in infection increase fitness of Vibrio cholerae after release into the environment / Cell Host Microbe. 2:264~277
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