title: Isolation and characterization of monoclonal antibodies against ribonuclease inhibitor.
abstract: Mouse monoclonal antibodies were generated against human ribonuclease inhibitor, an intracellular regulatory protein. A total of four antibodies were isolated, all of which were of the immunoglobulin G1 subtype. Western blot analysis of the antibodies suggested monospecificity. Based on immunoradiometric competition assays two of the antibodies were determined to be directed against the same antigenic epitope, while the other two were against a second and possibly third epitope. None of the antibodies appeared to be directed against the ribonuclease binding site of the antigen. Data is presented suggesting that ribonuclease inhibitor is present in normal human serum. The potential significance of these findings is discussed.
authors: Department of Medicine, New York University Medical Center, N.Y.
authors: M
authors: M
authors: Feldman
authors: D S
authors: DS
authors: Kohtz
authors: D L
authors: DL
authors: Kleinberg
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology*; D000918:Antibody Specificity; D000937:Antigen-Antibody Reactions; D015153:Blotting, Western; D000939:Epitopes; D006801:Humans; D051379:Mice; D008970:Molecular Weight; D010926:Placental Hormones / Q000097:blood / Q000276:immunology* / Q000378:metabolism; D012260:Ribonucleases / Q000037:antagonists & inhibitors* / Q000378:metabolism
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D010926:Placental Hormones; C022052:placental ribonuclease inhibitor; D012260:Ribonucleases