The radioligand-binding assay is a relatively simple but powerful tool for studying G-protein-coupled receptors. There are three basic types of radioligand-binding experiments: (1) saturation experiments from which the affinity of the radioligand for the receptor and the binding site density can be determined; (2) inhibition experiments from which the affinity of a competing, unlabeled compound for the receptor can be determined: and (3) kinetic experiments from which the forward and reverse rate constants for radioligand binding can be determined. Detailed methods for typical radioligand-binding assays for G-protein-coupled receptors in membranes and intact cells are presented for these types of experiments. Detailed procedures for analysis of the data obtained from these experiments are also given.
|Original language||English (US)|
|Number of pages||28|
|Journal||Methods in molecular biology (Clifton, N.J.)|
|State||Published - 2004|
ASJC Scopus subject areas
- Molecular Biology