title: Monoclonal antibodies to human urokinase identify the single-chain pro-urokinase precursor.
abstract: Monoclonal antibodies have been obtained that recognize either the A or B chain of human urinary urokinase. These antibodies identify human urokinase-producing cells and the product of urokinase mRNA. Anti-urokinase monoclonal antibodies precipitate an approximately equal to 54,000-dalton protein synthesized in vitro in a rabbit reticulocyte cell-free system. This pro-urokinase appears to be the precursor of both A and B chains of human urinary urokinase. Urokinase mRNA in human kidney constitutes only 0.1% or less of total poly(A)+ RNA.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D002460:Cell Line; D004792:Enzyme Precursors / Q000235:genetics* / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay; D005455:Fluorescent Antibody Technique; D006801:Humans; D007680:Kidney Neoplasms; D051379:Mice; D008807:Mice, Inbred BALB C; D008970:Molecular Weight; D010954:Plasmacytoma / Q000276:immunology; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000235:genetics; D051381:Rats; D014568:Urokinase-Type Plasminogen Activator / Q000235:genetics* / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D004792:Enzyme Precursors; D012333:RNA, Messenger; D014568:Urokinase-Type Plasminogen Activator