Characterization of the receptor for glucagon-like peptide-1(7-36)amide on plasma membranes from rat insulinoma-derived cells by covalent cross-linking. 1989

R Göke, and T Cole, and J M Conlon
Clinical Research Group for Gastrointestinal Endocrinology, Max-Planck-Gesellschaft, University of Göttingen, Federal Republic of Germany.

125I-Labelled glucagon-like peptide-1(7-36)amide was cross-linked to a specific binding protein in plasma membranes prepared from RINm5F rat insulinoma-derived cells using disuccinimidyl suberate. Consistent with the presence of a single class of binding site on the surface of intact cells, only a single radiolabelled band at Mr63,000 was identified by SDS-PAGE after solubilization of the ligand-binding protein complex. The band was not observed when 10nM glucagon-like peptide-1(7-36)amide was included in the binding assay, but 1 microM concentrations of glucagon-like peptide-1(1-36)amide, glucagon-like peptide-2 and glucagon did not decrease the intensity of labelling. No change in the mobility of the band was observed under reducing conditions, suggesting that the binding protein in the receptor is not attached to other subunits via disulphide bonds. In control incubations using plasma membranes from pig intestinal epithelial cells, which do not contain specific binding sites for glucagon-like peptide-1(7-36)amide, no cross-linked ligand-binding protein complex was observed.

UI MeSH Term Description Entries
D007340 Insulinoma A benign tumor of the PANCREATIC BETA CELLS. Insulinoma secretes excess INSULIN resulting in HYPOGLYCEMIA. Adenoma, beta-Cell,Insuloma,beta-Cell Tumor,Adenoma, beta Cell,Adenomas, beta-Cell,Insulinomas,Insulomas,Tumor, beta-Cell,Tumors, beta-Cell,beta Cell Tumor,beta-Cell Adenoma,beta-Cell Adenomas,beta-Cell Tumors
D007516 Adenoma, Islet Cell A benign tumor of the pancreatic ISLET CELLS. Usually it involves the INSULIN-producing PANCREATIC BETA CELLS, as in INSULINOMA, resulting in HYPERINSULINISM. Islet Cell Tumor,Islet of Langerhans Tumor,Nesidioblastoma,Pancreatic Islet Cell Tumors,Island Cell Tumor,Adenomas, Islet Cell,Island Cell Tumors,Islet Cell Adenoma,Islet Cell Adenomas,Islet Cell Tumors,Langerhans Tumor Islet,Nesidioblastomas,Tumor Islet, Langerhans,Tumor, Island Cell,Tumor, Islet Cell,Tumors, Island Cell,Tumors, Islet Cell
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D011956 Receptors, Cell Surface Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behavior of the target cell (From Alberts, Molecular Biology of the Cell, 2nd ed, pp693-5). Cell surface receptors, unlike enzymes, do not chemically alter their ligands. Cell Surface Receptor,Cell Surface Receptors,Hormone Receptors, Cell Surface,Receptors, Endogenous Substances,Cell Surface Hormone Receptors,Endogenous Substances Receptors,Receptor, Cell Surface,Surface Receptor, Cell
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002462 Cell Membrane The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells. Plasma Membrane,Cytoplasmic Membrane,Cell Membranes,Cytoplasmic Membranes,Membrane, Cell,Membrane, Cytoplasmic,Membrane, Plasma,Membranes, Cell,Membranes, Cytoplasmic,Membranes, Plasma,Plasma Membranes
D003432 Cross-Linking Reagents Reagents with two reactive groups, usually at opposite ends of the molecule, that are capable of reacting with and thereby forming bridges between side chains of amino acids in proteins; the locations of naturally reactive areas within proteins can thereby be identified; may also be used for other macromolecules, like glycoproteins, nucleic acids, or other. Bifunctional Reagent,Bifunctional Reagents,Cross Linking Reagent,Crosslinking Reagent,Cross Linking Reagents,Crosslinking Reagents,Linking Reagent, Cross,Linking Reagents, Cross,Reagent, Bifunctional,Reagent, Cross Linking,Reagent, Crosslinking,Reagents, Bifunctional,Reagents, Cross Linking,Reagents, Cross-Linking,Reagents, Crosslinking
D004763 Glucagon-Like Peptides Peptides derived from proglucagon which is also the precursor of pancreatic GLUCAGON. Despite expression of proglucagon in multiple tissues, the major production site of glucagon-like peptides (GLPs) is the INTESTINAL L CELLS. GLPs include glucagon-like peptide 1, glucagon-like peptide 2, and the various truncated forms. Enteroglucagon,Enteroglucagons,Glucagon-Like Peptide,Glucagon-Like Polypeptide,Gut Glucagon,Glucagon-Like Polypeptides,Glucagon Like Peptide,Glucagon Like Peptides,Glucagon Like Polypeptide,Glucagon Like Polypeptides,Glucagon, Gut,Peptide, Glucagon-Like,Polypeptide, Glucagon-Like
D005934 Glucagon A 29-amino acid pancreatic peptide derived from proglucagon which is also the precursor of intestinal GLUCAGON-LIKE PEPTIDES. Glucagon is secreted by PANCREATIC ALPHA CELLS and plays an important role in regulation of BLOOD GLUCOSE concentration, ketone metabolism, and several other biochemical and physiological processes. (From Gilman et al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed, p1511) Glucagon (1-29),Glukagon,HG-Factor,Hyperglycemic-Glycogenolytic Factor,Proglucagon (33-61),HG Factor,Hyperglycemic Glycogenolytic Factor
D000067757 Glucagon-Like Peptide-1 Receptor A receptor for GLUCAGON-LIKE PEPTIDE 1 (GLP-1) expressed primarily on the surface of beta and ductal exocrine cells of the pancreas, as well as cells of other tissues. GLP-1 acts through GLP-1R to potentiate signaling in pancreatic cells in response to glucose-stimulated insulin secretion (GSIS). GLP-1 Receptor,GLP-1R Receptor,GLP1R Protein,GLP1R Receptor,GLP 1 Receptor,GLP 1R Receptor,Glucagon Like Peptide 1 Receptor,Peptide-1 Receptor, Glucagon-Like,Protein, GLP1R,Receptor, GLP-1,Receptor, GLP-1R,Receptor, GLP1R,Receptor, Glucagon-Like Peptide-1

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