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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제17권 제9호
- 발행연도
- 2007.1
- 수록면
- 1,452 - 1,459 (8page)
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The Dps protein, which is overexpressed in harshenvironments, is known to play a critical role in the protectionof DNA against oxidative stresses. In this study, the roles ofFur in the expression of the dps gene in Salmonella protection mechanisms against oxidative stres in Salmonellacels preexposed to iron-stress were investigated. Twoputative Fur boxes were predicted within the promoter regionof the S. typhimurium dps gene. The profile of dps expressionperformed by the LacZ reporter assay revealed growth-phase dependency regardles of iron-status under the cultureconditions. The fur mutant, χ4659, evidenced a reduced levelof β-galactosidase as compared to the wild-type strain. Theresults observed after the measurement of the Dps protein invarious Salmonella regulatory mutants were consistent withthe results acquired in the reporter asay. This evidencesuggested that Fur performs a function as a subsidiary regulatorin the expresion of dps. The survival ability of Salmonellastrains after exposure to oxidative stres demonstrated that theDps protein performs a pivotal function in the survival ofstationary-phase S. typhimurium against oxidative stress.Salmonella cels grown in iron-restricted condition required(dps) cells grown in iron-replete condition survived at arate similar to that observed in the wild-type strain, therebysuggesting the induction of an unknown protection mechanism(s)other than Dps in this condition.
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참고문헌 (24)
참고문헌 신청
/ 1987 / P. A. and R. Curtiss III. 1987. Plasmid-associated virulence of Salmonella typhimurium. Infect. Immun. 55 : 2891 ~ 2901
Almiron / 1992 / and R. Kolter. 1992. A novel DNA-binding protein with regulatory and protective roles in starved Escherichia coli. Genes Dev. 6 : 2646 ~ 2654
Andrews, S. C., A. K. Robinson, and F. Rodriguez-Quinones / 2003 / Bacterial iron homeostasis 27 : 215 ~ 237
Bagg / 1987 / A. and J. B. Neilands. 1987. Ferric uptake regulation acts as a repressor as a cofactor to bind the operator of an iron transport operon in Escherichia coli. Bi
Buchmeier / 1993 / and F. Heffron. 1993. Recombination-deficient mutants of Salmonella typhimurium are avirulent and sensitive to the oxidative burst of macrophages. Mol. Mic
Almiron / 1992 / and R. Kolter. 1992. A novel DNA-binding protein with regulatory and protective roles in starved Escherichia coli. Genes Dev. 6 : 2646 ~ 2654
Andrews, S. C., A. K. Robinson, and F. Rodriguez-Quinones / 2003 / Bacterial iron homeostasis 27 : 215 ~ 237
Bagg / 1987 / A. and J. B. Neilands. 1987. Ferric uptake regulation acts as a repressor as a cofactor to bind the operator of an iron transport operon in Escherichia coli. Bi
Buchmeier / 1993 / and F. Heffron. 1993. Recombination-deficient mutants of Salmonella typhimurium are avirulent and sensitive to the oxidative burst of macrophages. Mol. Mic
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