The function of Ensembl gene identifier ENSG00000249715 (FER1L5, fer-1 like family member 5) is as follows. Plays a crucial role in male fertility, primarily through its involvement in the acrosome reaction of spermatozoa. Required for the Ca(2+)-activated fusion of the acrosomal membrane with the plasma membrane during the acrosome. May play a role in skeletal muscle cell development by ensuring effective myoblast fusion and facilitating membrane repair. .