Predicted to enable protein-disulfide reductase activity. Involved in inner ear receptor cell stereocilium organization and vestibular receptor cell development. Acts upstream of or within inner ear auditory receptor cell differentiation; post-embryonic animal organ morphogenesis; and sensory perception of sound. Located in kinocilium and stereocilium. Is expressed in endolymphatic duct and utricle. Human ortholog(s) of this gene implicated in autosomal recessive nonsyndromic deafness 25. Orthologous to human GRXCR1 (glutaredoxin and cysteine rich domain containing 1). [provided by Alliance of Genome Resources, Apr 2022]