Definition: A non-fibrillar collagen found in the structure of BASEMENT MEMBRANE. Collagen type IV molecules assemble to form a sheet-like network which is involved in maintaining the structural integrity of basement membranes. The predominant form of the protein is comprised of two alpha1(IV) subunits and one alpha2(IV) subunit, however, at least six different alpha subunits can be incorporated into the heterotrimer.
precursors: coord IM with PROCOLLAGEN (IM)
Other names Procollagen, Type IV; Collagen, Type IV; Collagen, 7S; alpha1(IV) collagen; Type IV Procollagen; Type IV Collagen; Type IV (Basement Membrane) Collagen; Procollagen Type IV; Collagen alpha1(IV); Collagen Type IV, alpha2 Subunit; Collagen Type IV, alpha2 Chain; Collagen Type IV, alpha1 Subunit; Collagen Type IV, alpha1 Chain; 7S Collagen