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The Journal of Cell Biology, Vol 65, 147-162, Copyright © 1975 by The Rockefeller University Press

ARTICLES

Adenosine triphosphate-induced motility and sliding of filaments in mammalian sperm extracted with Triton X-100

CB Lindemann and IR Gibbons

Bull sperm that had been extracted with 0.2% Triton X-100 could be reactivated with ATP, and their movement closely resembled the motion of intact live sperm. Their motility required the presence of ATP, magnesium, and a medium of suitable salt concentration and pH. When Triton-extracted bull sperm were digested breifly with trypsin at pH 9.0, they appeared to reatin most of their normal structure, but subsequent exposure of the digested sperm to ATP caused a disintegration by light microscopy, using dark-field illumination, combined with an electron microscope study of preparations of the disintegrated sperm, demonstrated the presence of an active sliding mechanism of filament interaction in bull spermatozoa. Human sperm subjected to the same procedures showed similar patterns of reactivation and of disintegration.
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