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  • calmodulin  (1)
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Gamete Research 9 (1984), S. 253-260 
    ISSN: 0148-7280
    Keywords: calmodulin ; embryonic development ; mitosis ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Two-cell mouse embryos were incubated in the presence of calmodulin inhibitors to determine their effect on embryonic development to the blastocyst stage. Calmodulin, a Ca2+-dependent regulatory protein, has been localized in the cytoplasm and has been implicated in regulation of many cellular events, such as mitosis. Several concentrations of either commercial or synthesized calmodulin inhibitors were tested. Several phenothiazine sulfoxide derivatives were more effective than the three naphthalene sulonic acid derivatives tested; 2-chloro-10-aminopropyl phenothiazine and 10-aminopropyl phenothiazine were the most potent phenothiazines to inhibit embryonic development at the two-cell stage. The interesting aspect of this study is that phenothiazine sulfoxide derivatives are not potent inhibitors of calmodulin, however, they were successful in inhibiting embryonic development. Potent inhibitors of calmodulin apparently did not penetrate the embryonic membranes because they had no effect.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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