Predicted to enable identical protein binding activity. Predicted to act upstream of or within inner ear development and protein secretion. Predicted to be located in several cellular components, including apical plasma membrane; bicellular tight junction; and lateral plasma membrane. Predicted to be part of protein-containing complex. Predicted to be active in cell projection; extracellular space; and plasma membrane. Human ortholog(s) of this gene implicated in isolated microphthalmia 5; late-onset retinal degeneration; microphthalmia; nanophthalmos; and retinitis pigmentosa. Orthologous to several human genes including MFRP (membrane frizzled-related protein). [provided by Alliance of Genome Resources, Apr 2022]