Predicted to enable calcium ion binding activity. Acts upstream of or within several processes, including adult walking behavior; detection of mechanical stimulus involved in sensory perception; and plasma membrane bounded cell projection organization. Located in several cellular components, including photoreceptor outer segment; plasma membrane; and stereocilium. Is expressed in several structures, including central nervous system; gut epithelium; metanephros; sensory organ; and vibrissa follicle. Used to study Usher syndrome type 1F and autosomal recessive nonsyndromic deafness 23. Human ortholog(s) of this gene implicated in Usher syndrome type 1D; Usher syndrome type 1F; and autosomal recessive nonsyndromic deafness 23. Orthologous to human PCDH15 (protocadherin related 15). [provided by Alliance of Genome Resources, Apr 2022]