Cytoplasmic free-Ca2+ level rises with repellents and falls with attractants in Escherichia coli chemotaxis.

@article{Tisa1995CytoplasmicFL,
  title={Cytoplasmic free-Ca2+ level rises with repellents and falls with attractants in Escherichia coli chemotaxis.},
  author={Louis S Tisa and Julia Adler},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1995},
  volume={92 23},
  pages={10777-81}
}
Cytoplasmic free-Ca2+ levels in Escherichia coli were measured by use of the fluorescent Ca(2+)-indicator dye fura-2. Chemotactically wild-type E. coli regulated cytoplasmic free Ca2+ at approximately 100 nM when no stimuli were encountered, but changes in bacterial behavior correlated with changes in cytoplasmic free-Ca2+ concentration. For chemotactically wild-type E. coli, addition of a repellent resulted in cells tumbling and a transient increase in cytoplasmic free-Ca2+ levels. Conversely… CONTINUE READING

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