Abstract
Cyclic AMP has long been implicated as an activator of sperm motility1–5. From more recent experiments using demembranated mammalian and sea urchin spermatozoa6,7, it was concluded that cyclic AMP only increases the motility of the axoneme after it has been initiated by MgATP2−. We have now carried out similar experiments using spermatozoa collected from the rainbow trout and demembranated by treatment with the detergent Triton X-100. Our results suggest that in this species, cyclic AMP is required before MgATP2− to trigger maturation of the nonmotile axoneme. Subsequent addition of an energy source then induces motility.
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Morisawa, M., Okuno, M. Cyclic AMP induces maturation of trout sperm axoneme to initiate motility. Nature 295, 703–704 (1982). https://doi.org/10.1038/295703a0
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DOI: https://doi.org/10.1038/295703a0
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