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J Bacteriol. 2011 Feb;193(3):768-73. doi: 10.1128/JB.01196-10. Epub 2010 Nov 19.

Chemotaxis to the quorum-sensing signal AI-2 requires the Tsr chemoreceptor and the periplasmic LsrB AI-2-binding protein.

Author information

1
3122 TAMU, Texas A&M University, College Station, TX 77843-3122, USA.

Abstract

AI-2 is an autoinducer made by many bacteria. LsrB binds AI-2 in the periplasm, and Tsr is the l-serine chemoreceptor. We show that AI-2 strongly attracts Escherichia coli. Both LsrB and Tsr are necessary for sensing AI-2, but AI-2 uptake is not, suggesting that LsrB and Tsr interact directly in the periplasm.

PMID:
21097621
PMCID:
PMC3021223
DOI:
10.1128/JB.01196-10
[Indexed for MEDLINE]
Free PMC Article

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