title: The use of monoclonal antibodies to fragments of chicken type IV collagen in structural and localization studies.
abstract: In previous experiments, three pepsin-resistant fragments of type IV collagen were isolated from chicken gizzards and designated 7S, F3, and (F1)2F2 (Mayne, R., and Zettergren, J. G. (1980) Biochemistry 19, 4065-4072). In the present experiments, a series of monoclonal antibodies to type IV collagen were prepared, each one of which recognized an epitope present in only one of the three fragments. A high molecular weight fraction of type IV collagen (designated 7S + arms (215 nm)) was isolated after agarose gel filtration and characterized by electron microscopy after rotary shadowing and by gel electrophoresis. Analysis of 7S + arms (215 nm) by inhibition enzyme-linked immunosorbent assay demonstrated the presence of the epitopes for 7S and F3 but not for (F1)2F2. This result, therefore, provides additional evidence that the order of the pepsin-resistant fragments of chicken type IV collagen is 7S-F3-(F1)2F2.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D002645:Chickens; D003094:Collagen / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D005895:Gizzard, Avian / Q000032:analysis; D008854:Microscopy, Electron
chemical_list: D000911:Antibodies, Monoclonal; D003094:Collagen