... hidden under the plasma membrane before the acrosome reaction but then moves out to the plasma membrane from the outer acrosomal membrane during the acrosome reaction in live spermatozoa ( Satouh et al., 2012 ). This suggests that an additional function of the acrosome reaction is to render spermatozoa...

... of sperm lacking the long isoform of β1,4-galactosyltransferase I (GalT I), a sperm surface protein that functions as a receptor for the zona pellucida glycoprotein, ZP3, and as an inducer of the acrosome reaction following ZP3-dependent aggregation. As expected, wild-type sperm must undergo capacitation...

... fertilization mouse eggs mouse sperm zona pellucida glycoproteins sperm receptors eggbinding proteins sperm membranes acrosome reaction During fertilization in mice, the initial species-specific binding of sperm to unfertilized eggs is mediated by both primary ‘sperm receptors’ located in the egg...

... is not compatible with its presumptive sequestration within the sperm acrosome until a late phase of the acrosome reaction. In an earlier study (J. Tesarik, J. Drahorad, J. Peknicova, 1988, Fertil. Steril . 50, 133-141), we reported the binding of an anti-acrosin monoclonal antibody (M0-AKR.1) to the plasma...

... orientation to allow them to interact with basic residues on the protein. It is suggested that guinea-pig spermatozoa retain sufficient proacrosin/acrosin bound to the inner acrosomal membrane after the acrosome reaction to mediate binding to the zona pellucida and that functionally proacrosin is analogous...