Enables epidermal growth factor receptor binding activity. Involved in several processes, including cellular response to low-density lipoprotein particle stimulus; negative regulation of cytokine production; and regulation of T-helper cell differentiation. Acts upstream of or within epidermal growth factor receptor signaling pathway. Predicted to be part of phosphatidylinositol 3-kinase complex. Is expressed in retina. Orthologous to human SOCS5 (suppressor of cytokine signaling 5). [provided by Alliance of Genome Resources, Apr 2022]