The function of ENSG00000160183 (TMPRSS3, transmembrane serine protease 3) is as follows. Probable serine protease that plays a role in hearing. Acts as a permissive factor for cochlear hair cell survival and activation at the onset of hearing and is required for saccular hair cell survival (By similarity). Activates ENaC (in vitro). {ECO:0000250, ECO:0000269|PubMed:12393794}.