Secretory protein decondensation as a distinct, Ca2+-mediated event during the final steps of exocytosis in Paramecium cells

@article{Bilinski1981SecretoryPD,
  title={Secretory protein decondensation as a distinct, Ca2+-mediated event during the final steps of exocytosis in Paramecium cells},
  author={Mario Bilinski and Helmut Plattner and Hans J. Matt},
  journal={The Journal of Cell Biology},
  year={1981},
  volume={88},
  pages={179 - 188}
}
The contents of secretory vesicles ("trichocysts") were isolated in the condensed state from Paramecium cells. It is well known that the majority portion of trichocysts perform a rapid decondensation process during exocytosis, which is visible in the light microscope. We have analyzed this condensed leads to decondensed transition in vitro and determined some relevant parameters. In the condensed state, free phosphate (and possibly magnesium) ions screen local surplus charges. This is supported… CONTINUE READING
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