Predicted to be an extracellular matrix structural constituent. Acts upstream of or within collagen-activated tyrosine kinase receptor signaling pathway and neuromuscular junction development. Located in basement membrane and neuromuscular junction. Part of collagen type IV trimer. Is expressed in several structures, including alimentary system; brain; extraembryonic component; genitourinary system; and spinal cord. Used to study X-linked Alport syndrome. Human ortholog(s) of this gene implicated in Alport syndrome and X-linked Alport syndrome. Orthologous to human COL4A5 (collagen type IV alpha 5 chain). [provided by Alliance of Genome Resources, Apr 2022]