Enables fibronectin binding activity. Acts upstream of or within several processes, including chorio-allantoic fusion; heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules; and pericyte cell migration. Located in cell-cell junction and external side of plasma membrane. Is expressed in several structures, including alimentary system; embryo mesenchyme; genitourinary system; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in autism spectrum disorder and pancreatic cancer. Orthologous to human ITGA4 (integrin subunit alpha 4).
