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粪肠球菌中的碱性应激反应:适应性、交叉保护及蛋白质合成变化

Alkaline stress response in Enterococcus faecalis: adaptation, cross-protection, and changes in protein synthesis.

作者信息

Flahaut S, Hartke A, Giard J C, Auffray Y

机构信息

Laboratoire de Microbiologie de l'Environnement, Université de Caen, France.

出版信息

Appl Environ Microbiol. 1997 Feb;63(2):812-4. doi: 10.1128/aem.63.2.812-814.1997.

Abstract

The alkaline shock response in Enterococcus faecalis was studied in this work. Cells adapted to an optimum pH of 10.5 were tolerate to pH 11.9 conditions but acquired sensitivity to acid damage. An analysis of stress proteins revealed that 37 polypeptides were amplified. Two of these are DnaK and GroEL. The combined results show that bile salts and alkaline stress responses are closely related.

摘要

本研究对粪肠球菌中的碱性休克反应进行了研究。适应最适pH值为10.5的细胞能够耐受pH值为11.9的条件,但对酸损伤变得敏感。对应激蛋白的分析表明,有37种多肽被扩增。其中两种是DnaK和GroEL。综合结果表明,胆盐和碱性应激反应密切相关。

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