Male sterile mutant <i>casanova</i> gives clues to mechanisms of sperm–egg interactions in <i>Drosophila melanogaster</i>

Abstract excerpt

The plasma membrane of the spermatozoa of Drosophila melanogaster contains two integral proteins with glycosidase activity, beta-N-acetylglucosaminidase and alpha-D-mannosidase. Biochemical analysis and ultrastructural cytochemistry of spermatozoa of the autosomal male sterile mutant casanova reveal that at least one of these enzymes, beta-N-acetylglucosaminidase, is crucial for sperm-egg interactions. casanova...

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