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  • Title: Localized reactivation of the principal piece of demembranated hamster sperm by iontophoretic application of ATP.
    Author: Yeung CH, Woolley DM.
    Journal: J Submicrosc Cytol; 1983 Jan; 15(1):327-31. PubMed ID: 6842648.
    Abstract:
    Mature hamster sperm were demembranated with Triton X-100, and the principal piece of the flagellum was reactivated by iontophoretic application of ATP. The response was a brief local straightening of a short length of the flagellum followed by the formation of a pair of bends at the two ends of the straight region. The formation of a PR (principal and reverse bends in a proximo-distal sequence) or an RP bend-pair is interpreted as a result of active sliding of doublet subset (1-4) or (6-9) respectively in the interbend region. The percentage of PR responses increased with the initial local curvature of the resting R bend and the distance of the stimulated site from the flagellar base, and decreased with the age of the preparation.
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