title: [Digitonin-sensitive calcium pool and its change during synchronous division of Tetrahymena pyriformis cells].
abstract: A very significant intracellular pool of calcium, sensitive to digitonin action and different from one of free cytozolic Ca2+, has been shown to exist in the cells of ciliate protozoan T. pyriformis. Calcium content in digitonin-sensitive pool NdigCa2+ has been estimated throughout the cell cycle in synchronized culture of T. pyriformis. The value of NdigCa2+ decreased in the period of time prior to and at the cell division, whereas after the division itself it increased. The possible role of the calcium content changes of digitonin-sensitive pool in regulation of cytozolic Ca2+ level and in control of cell division is discussed.
authors.forename: I S
authors.initials: IS
authors.lastname: Iorkov
authors.forename: P R
authors.initials: PR
authors.lastname: Makarov
authors.forename: T S
authors.initials: TS
authors.lastname: Azarashvili
authors.forename: V P
authors.initials: VP
authors.lastname: Zinchenko
authors.forename: L Iu
authors.initials: LIu
authors.lastname: Kudzina
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Evtodienko
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002455:Cell Division / Q000187:drug effects*; D004072:Digitonin / Q000494:pharmacology*; D013769:Tetrahymena pyriformis / Q000166:cytology / Q000187:drug effects*
chemical_list: D004072:Digitonin; D002118:Calcium