Predicted to enable SH3 domain binding activity. Predicted to be involved in endocytosis and endosomal transport. Predicted to be located in clathrin-coated pit. Predicted to be active in cytoplasm and plasma membrane. Is expressed in cranium; lung; nervous system; otic capsule; and thymus primordium. Human ortholog(s) of this gene implicated in neurodegeneration with brain iron accumulation. Orthologous to human REPS1 (RALBP1 associated Eps domain containing 1). [provided by Alliance of Genome Resources, Apr 2022]