FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term inner acrosomal membrane ID (Ontology) GO:0002079 (Gene Ontology)
Definition The acrosomal membrane region that underlies the acrosomal vesicle and is located toward the sperm nucleus. This region is responsible for molecular interactions allowing the sperm to penetrate the zona pellucida and fuses with the egg plasma membrane.[ PubMed:3899643 PubMed:8936405 ]
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acrosomal vesicle
 |__acrosomal membrane____________
vesicle membrane                  |
 |__cytoplasmic vesicle membrane__|
secretory granule membrane        |
 |__acrosomal membrane____________|
cytoplasmic vesicle               |
 |__cytoplasmic vesicle membrane__|
                                  inner acrosomal membrane
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Is a cytoplasmic vesicle membrane
Part of acrosomal membrane
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