Predicted to enable sodium channel regulator activity. Involved in sensory perception of sound. Located in endoplasmic reticulum and neuronal cell body. Is expressed in several structures, including alimentary system; genitourinary system; heart; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in autosomal recessive nonsyndromic deafness 8 and sensorineural hearing loss. Orthologous to human TMPRSS3 (transmembrane serine protease 3). [provided by Alliance of Genome Resources, Apr 2022]