Predicted to enable alpha-L-arabinofuranosidase activity. Acts upstream of or within inner ear receptor cell stereocilium organization; protein localization; and vibrational conductance of sound to the inner ear. Predicted to be located in extracellular region. Predicted to be active in extracellular matrix and extracellular space. Is expressed in cerebral cortex and inner ear. Human ortholog(s) of this gene implicated in autosomal recessive nonsyndromic deafness 84B. Orthologous to human OTOGL (otogelin like).