Phospholipase activity of sea urchin sperm: Its possible involvement in membrane fusion
- 1 October 1976
- journal article
- research article
- Published by Wiley in Journal of Experimental Zoology
- Vol. 198 (1) , 39-47
- https://doi.org/10.1002/jez.1401980106
Abstract
Phospholipase activity of egg-water treated Arbacia punctulata and Lytechinus variegatus sperm was shown to result from the sequential action of phospholipase A and lysophospholipase. A transient burst of phospholipase A activity followed induction of the acrosome reaction with egg water. The time of appearance suggested an acrosomal localization of the enzyme. The peak activity of phospholipase A correlated with initiation of sperm-egg fusion, suggesting a role for sea urchin sperm phospholipase A in membrane fusion and/or egg activation during fertilization.Keywords
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