Molecular Properties of the Vasoactive Intestinal Peptide Receptor in Aorta and Other Tissues
The molecular weight of the vasoactive intestinal peptide (VIP) receptor was assessed in bovine aorta, and rat liver, lung, and brain by covalent cross-linking and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The receptor in all four tissues was found to be a single polypeptide of approximate Mr 54,000, contradicting previous claims for substantial heterogeneity in the molecular weight of this receptor. Guanine nucleotides inhibit cross-linking of 125I-VIP to its receptor, and cross-linking with ethylene glycolbis(succinimidylsuccinate) provides further evidence for complex formation between VIP, its receptor and a guanine nucleotide-binding regulatory protein (G-protein). The precise mechanism of receptor-G-protein coupling may differ between the aorta and other tissues.
Shreeve, S. M.; DeLuca, Alexander W.; Diehl, Nicole L.; and Kermode, John C.. 1992. Molecular Properties of the Vasoactive Intestinal Peptide Receptor in Aorta and Other Tissues. Peptides. Vol.13(5). 919-926. https://doi.org/10.1016/0196-9781(92)90050-D PMID: 1336189 ISSN: 0196-9781