Biochemical Studies on the Acrosome Reaction of the Starfish, Asterias Amurensis I. Factors Participating in the Acrosome Reaction
Open Access
- 31 December 1980
- journal article
- research article
- Published by Wiley in Development, Growth & Differentiation
- Vol. 23 (2), 73-80
- https://doi.org/10.1111/j.1440-169x.1981.00073.x
Abstract
In contrast with the case in sea urchin sperm, in starfish the acrosome reaction is not spontaneously induced by simply increasing the extracellular Ca2+ concentration or pH. At higher pH, starfish sperm undergo morphological changes accompanied by exocytosis of the acrosomal vacuole, but they do not form acrosomal filaments. Nomarski-microscopic observation confirmed that spermatozoa undergo the acrosome reaction within the jelly coat. Acrosome reaction-inducing substance, a glycoprotein from the egg jelly, required a diffusible cofactor(s) present in the egg jelly for full activity. Several lines of evidence showed that this diffusible factor(s) is not merely Ca2+.This publication has 19 references indexed in Scilit:
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