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The novel regulators CheP and CheQ control the core chemotaxis operon cheVAW in Campylobacter jejuni
Cha, Guihong1; Chen, Zimin2; Mo, Ran1; Lu, Guangwen2; Gao, Beile
2019
Source PublicationMOLECULAR MICROBIOLOGY
ISSN0950-382X
Volume111Issue:1Pages:145
AbstractCampylobacter jejuni is the leading cause of foodborne gastrointestinal illness worldwide, and chemotaxis plays an important role in its host colonization and pathogenesis. Although many studies on chemotaxis have focused on the physical organization and signaling mechanism of the system's protein complex, much less is known about the transcriptional regulation of its components. Here, we describe two novel regulators, CJJ81176_0275 and CJJ81176_0276 (designated as CheP and CheQ), which specifically activate the transcription of the chemotaxis core genes cheV, cheA and cheW in C. jejuni and they are also essential for chemotactic responses. CheP has a single HD-related output domain (HDOD) domain and can promote CheQ binding to the cheVAW operon promoter through a protein-protein interaction. Mutagenesis analyses identified key residues critical for CheP function and/or interaction with CheQ. Further structural characterization of CheQ revealed a novel fold with strong positive surface charges that allow for its DNA binding. These findings reveal the gene regulatory mechanism of the chemotaxis system in an important bacterial pathogen and provide potential anti-virulence targets for campylobacteriosis treatment. In addition, ChePQ is an example of how proteins with the widespread but functionally obscure HDOD can coordinate with a signal output DNA-binding protein/domain to regulate the expression of important signaling pathways.
DepartmentLMB
DOI10.1111/mmi.14144
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17927
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Key Lab Marine Mat Med, CAS Key Lab Trop Marine Bio Resources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sichuan Univ, West China Hosp, State Key Lab Biotherapy, Collaborat Innovat Ctr Biotherapy,WCHED, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Cha, Guihong,Chen, Zimin,Mo, Ran,et al. The novel regulators CheP and CheQ control the core chemotaxis operon cheVAW in Campylobacter jejuni[J]. MOLECULAR MICROBIOLOGY,2019,111(1):145, 158.
APA Cha, Guihong,Chen, Zimin,Mo, Ran,Lu, Guangwen,&Gao, Beile.(2019).The novel regulators CheP and CheQ control the core chemotaxis operon cheVAW in Campylobacter jejuni.MOLECULAR MICROBIOLOGY,111(1),145.
MLA Cha, Guihong,et al."The novel regulators CheP and CheQ control the core chemotaxis operon cheVAW in Campylobacter jejuni".MOLECULAR MICROBIOLOGY 111.1(2019):145.
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