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Both Quorum Sensing (Qs)-I and Ii Systems Regulate Escherichia coli Flagellin Expression

Both Quorum Sensing (Qs)-I and Ii Systems Regulate Escherichia coli Flagellin Expression

Yang Yang1,2, Yun Liu1, Mingxu Zhou1 and Guoqiang Zhu1,*

1Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
2Institute of Epigenetics and Epigenomics and College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China

*      Corresponding author: yzgqzhu@yzu.edu.cn;

yzgqzhu@hotmail.com

 

 

ABSTRACT

For elucidating effect of quorum sensing (QS) systems I and II (QS-1 and QS-II) on Escherichia coli flagellin expression, E. coli F18ab strain 107/86 was modified to either express acyl-homoserine lactone (AHL) synthase (QS-I) or deleted for autoinducer 2 (AI-2) expression (QS-II). AHL expression and deletion of luxS (AI-2) both inhibited flagellin expression, as measured by motility assays, bacterial gene expression, and host responses to infection. The QS systems and flagellin were coordinately regulated, as deleting fliC caused decreased QS-II activity.
 

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Pakistan Journal of Zoology

August

Vol. 50, Iss. 4, Pages 1199-1600

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