Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.

Graphical

VesicleSecretory vesicleAcrosomeCytoplasmic vesicle

Definition

The acrosome is a large lysosome-like vesicle overlying the sperm nucleus. This spermatid specific organelle, derived from the Golgi during spermatogenesis, contains both unique acrosomal enzymes and common enzymes associated with lysosomes in somatic cells. Only sperm that have undergone the acrosome reaction can fuse with egg plasma membrane. The acrosome reaction is characterized by multiple fusions of the outer acrosomal membrane with the sperm cell membrane.

Synonyms

Acrosomal vesicle

Category

› Cellular component

GOi

acrosomal vesicle [ GO:0001669 ]

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health