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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. A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome. A heterodimeric protein complex of protein C inhibitor and acrosin; complex formation inhibits the protease activity of acrosin. The acrosomal membrane region that underlies the plasma membrane of the sperm. This membrane fuses with the sperm plasma membrane as part of the acrosome reaction. A small subcellular vesicle, surrounded by a membrane, that is formed from the Golgi apparatus and contains a highly concentrated protein destined for secretion. Secretory granules move towards the periphery of the cell, their membranes fuse with the cell membrane, and their protein load is exteriorized. Processing of the contained protein may take place in secretory granules. The membrane that surrounds the acrosomal lumen. The acrosome is a special type of lysosome in the head of a spermatozoon that contains acid hydrolases and is concerned with the breakdown of the outer membrane of the ovum during fertilization. The lipid bilayer surrounding a cytoplasmic vesicle. The lipid bilayer surrounding a secretory granule.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: acrosomal membrane
Acc: GO:0002080
Aspect: Cellular Component
Desc: The membrane that surrounds the acrosomal lumen. The acrosome is a special type of lysosome in the head of a spermatozoon that contains acid hydrolases and is concerned with the breakdown of the outer membrane of the ovum during fertilization.
Proteins in PDR annotated with:
   This term: 2 [Search]
   Term or descendants: 3 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0002080 - acrosomal membrane (interactive image map)
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