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. 1993 Mar;175(5):1235-8.
doi: 10.1128/jb.175.5.1235-1238.1993.

Inhibition of Escherichia coli chemotaxis by omega-conotoxin, a calcium ion channel blocker

L S Tisa  1 , B M Olivera, J Adler
Affiliations

Inhibition of Escherichia coli chemotaxis by omega-conotoxin, a calcium ion channel blocker

L S Tisa et al. J Bacteriol. 1993 Mar.

Abstract

Escherichia coli chemotaxis was inhibited by omega-conotoxin, a calcium ion channel blocker. With Tris-EDTA-permeabilized cells, nanomolar levels of omega-conotoxin inhibited chemotaxis without loss of motility. Cells treated with omega-conotoxin swam with a smooth bias, i.e., tumbling was inhibited.

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