title: Biochemistry and biology of antigen presentation by macrophages.
abstract: The presentation of antigen by macrophages has been studied. We have shown that globular proteins must be processed in endocytic vesicles of low pH prior to presentation. Some of the structural requirements of one such processed peptide have been determined, as has the affinity for Ia of that peptide. Finally, we have shown that a membrane-associated form of interleukin-1 is also required for presentation of processed antigen to T cells.
mesh_terms: D000818:Animals; D000938:Antigen-Presenting Cells / Q000276:immunology* / Q000378:metabolism; D000942:Antigens, Bacterial / Q000276:immunology; D004705:Endocytosis; D000949:Histocompatibility Antigens Class II / Q000276:immunology; D006863:Hydrogen-Ion Concentration; D007371:Interferon-gamma / Q000494:pharmacology; D007375:Interleukin-1 / Q000502:physiology; D008264:Macrophages / Q000276:immunology* / Q000378:metabolism; D008565:Membrane Proteins / Q000502:physiology; D051379:Mice; D009113:Muramidase / Q000276:immunology / Q000378:metabolism; D010455:Peptides / Q000276:immunology / Q000378:metabolism
chemical_list: D000942:Antigens, Bacterial; D000949:Histocompatibility Antigens Class II; D007375:Interleukin-1; D008565:Membrane Proteins; D010455:Peptides; D007371:Interferon-gamma; D009113:Muramidase