Enables structural molecule activity. Acts upstream of or within adult locomotory behavior and sensory perception of sound. Located in cytosol and extracellular matrix. Is expressed in inner ear. Used to study autosomal recessive nonsyndromic deafness 18B. Human ortholog(s) of this gene implicated in autosomal recessive nonsyndromic deafness 18B. Orthologous to human OTOG (otogelin). [provided by Alliance of Genome Resources, Apr 2022]