Controlling biofilm formation, prophage excision and cell death by rewiring global regulator H-NS of Escherichia coli.
Controlling biofilm formation, prophage excision and cell death by rewiring global regulator H-NS of Escherichia coli.
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DOI:
10.1111/j.1751-7915.2010.00164.x
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发表时间:
2010-05
影响因子:
5.7
通讯作者:
Wood TK
中科院分区:
文献类型:
--
作者:
Hong SH;Wang X;Wood TK
The global regulator H‐NS of Escherichia coli controls genes related to stress response, biofilm formation and virulence by recognizing curved DNA and by silencing acquired genes. Here, we rewired H‐NS to control biofilm formation using protein engineering; H‐NS variant K57N was obtained that reduces biofilm formation 10‐fold compared with wild‐type H‐NS (wild‐type H‐NS increases biofilm formation whereas H‐NS K57N reduces it). Whole‐transcriptome analysis revealed that H‐NS K57N represses biofilm formation through its interaction with the nucleoid‐associated proteins Cnu and StpA and in the absence of these proteins, H‐NS K57N was unable to reduce biofilm formation. Significantly, H‐NS K57N enhanced the excision of defective prophage Rac while wild‐type H‐NS represses excision, and H‐NS controlled only Rac excision among the nine resident E. coli K‐12 prophages. Rac prophage excision not only led to the change in biofilm formation but also resulted in cell lysis through the expression of toxin HokD. Hence, the H‐NS regulatory system may be evolved through a single‐amino‐acid change in its N‐terminal oligomerization domain to control biofilm formation, prophage excision and apoptosis.
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影响因子:
3.7
作者:
Garcia-Contreras, Rodolfo;Zhang, Xue-Song;Kim, Younghoon;Wood, Thomas K.
通讯作者:
Wood, Thomas K.
影响因子:
3.2
作者:
Barrios, AFG;Zuo, RJ;Wood, TK
通讯作者:
Wood, TK
影响因子:
3.6
作者:
DERSCH, P;SCHMIDT, K;BREMER, E
通讯作者:
BREMER, E
影响因子:
3.2
作者:
FAUBLADIER, M;BOUCHE, JP
通讯作者:
BOUCHE, JP
影响因子:
11.4
作者:
GERDES, K;BECH, FW;VONMEYENBURG, K
通讯作者:
VONMEYENBURG, K