title: Class I histocompatibility antigens and insulin receptors: evidence for interactions.
abstract: We provide evidence for an interaction between mouse class I major histocompatibility complex antigens and insulin receptors. Antibodies against class I but not class II major histocompatibility complex antigens immunoprecipitate photoaffinity-labeled hepatic insulin receptors. Haplotype specificity is demonstrated by reciprocal precipitation using anti-class I antibodies and three strains of mice. Antibodies against the 45-kDa products of either the H-2K or H-2D locus and rabbit anti-mouse beta 2-microglobulin antibodies were shown to precipitate insulin receptors. We also demonstrate the specific binding of 125I-labeled insulin and 125I-labeled epidermal growth factor, but not 125I-labeled glucagon or 125I-labeled atrial natriuretic factor, to solubilized plasma membranes immunoprecipitated with anti-H-2K antibody. These observations suggest a specific interaction between class I major histocompatibility complex antigens and certain hormone receptors.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D001921:Brain / Q000378:metabolism; D002462:Cell Membrane / Q000378:metabolism; D004815:Epidermal Growth Factor / Q000378:metabolism; D066246:ErbB Receptors; D005934:Glucagon / Q000378:metabolism; D006183:H-2 Antigens / Q000276:immunology; D007328:Insulin / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008970:Molecular Weight; D011485:Protein Binding; D011972:Receptor, Insulin / Q000276:immunology / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000378:metabolism*
chemical_list: D000911:Antibodies, Monoclonal; D006183:H-2 Antigens; D007328:Insulin; D011956:Receptors, Cell Surface; D004815:Epidermal Growth Factor; D005934:Glucagon; D066246:ErbB Receptors; D011972:Receptor, Insulin