Enables identical protein binding activity and low-density lipoprotein particle receptor binding activity. Involved in phagocytosis and positive regulation of skeletal muscle acetylcholine-gated channel clustering. Acts upstream of or within protein folding and protein localization to cell surface. Located in plasma membrane. Is expressed in several structures, including genitourinary system; hemolymphoid system; liver; lung; and ventricular layer. Human ortholog(s) of this gene implicated in osteogenesis imperfecta type 20. Orthologous to human MESD (mesoderm development LRP chaperone). [provided by Alliance of Genome Resources, Apr 2022]