Cited 28 time in
- Title
- Transcriptional repressor HipB regulates the multiple promoters in Escherichia coli = 전사억제 HipB의 대장균내 다양한 프로모터 조절
- Author(s)
- C Y Lin; N Awano; H Masuda; Jung Ho Park; M Inouye
- Bibliographic Citation
- Journal of Molecular Microbiology and Biotechnology, vol. 23, no. 6, pp. 440-447
- Publication Year
- 2013
- Abstract
- HipB is a DNA-binding protein in Escherichia coli and negatively regulates its own promoter by binding to the palindromic sequences [ TATCC N 8 GGATA (N represents any nucleotides)] on the hipBA promoter. For such sequences, bioinformatic analysis revealed that there are a total of 39 palindromic sequences ( TATCC N (x) GGATA : N is any nucleotides and x is the number of nucleotides from 1 to 30) in the promoter regions of 33 genes on the E. coli genome. Notably, eutH and fadH have two and three TATCC N (x) GGATA palindromic sequences located in their promoters, respectively. Another significant finding was that a palindromic sequence was also identified in the promoter region of hipAB locus, known to be involved in the RelA-dependent persister cell formation in bacteria. Here, we demonstrated that HipB binds to the palindromic structures in the eutH , fadH , as well as the relA promoter regions and represses their expressions. We further demonstrated that HipA enhances the repression of the relA promoter activity by HipB. This effect was not ob-served with D291A HipA mutant which was previously shown to lack an ability to interact with HipB, indicating that HipA enhances the HipB's repressor activity through direct interaction with HipB.
- Keyword
- DormancyEscherichia coliHipAHipBPersistencePpGpp synthesisToxin-antitoxin systemRelA
- ISSN
- 1464-1801
- Publisher
- Karger
- DOI
- http://dx.doi.org/10.1159/000354311
- Type
- Article
- Appears in Collections:
- Division of Bio Technology Innovation > Bio-Evaluation Center > 1. Journal Articles
- Files in This Item:
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