The Drosophila Neprilysin 4 gene is essential for sperm function following sperm transfer to females.
Ohsako T, Shirakami M, Oiwa K, Ibaraki K, Karr TL, Tomaru M, Sanuki R, Takano-Shimizu-Kouno T. Genes Genet Syst. 2021 Dec 16; 96(4):177-186. Epub 2021 Sep 24.