Abstract
Microsomal membrane vesicles isolated from goat spermatozoa contain Ca2+-ATPase, and exhibit Ca2+ transport activities that do not require exogenous Mg2+ .The enzyme activity is inhibited by calcium-channel inhibitors,e.g. verapamil and diltiazem, like the well known Ca2+ , Mg2+-ATPase. The uptake of calcium is ATP (energy)-dependent and the accumulated Ca2+ can be completely released by the Ca2+ ionophore A23187, suggesting that a significant fraction of the vesicles are oriented inside out
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Sikdar, R., Ganguly, U., Chandra, S. et al. Calcium uptake and Ca2+-ATPase activity in goat spermatozoa membrane vesicles do not require Mg2+ . J Biosci 18, 73–82 (1993). https://doi.org/10.1007/BF02703039
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DOI: https://doi.org/10.1007/BF02703039