The autoradiographic localization of adenylate cyclase in rat kidney using [3H]forskolin

Lynne R. McMartin, Roger J. Summers

Research output: Contribution to journalArticleResearchpeer-review


The localization of [3H]forskolin binding to microscope slide mounted sections of rat kidney has been examined using autoradiography. Saturation studies showed [3H]forskolin binding to two sites, a high affinity site (KD = 8.7 nM, Bmax = 0.14 pmol/mg protein) and a low affinity site (KD = 6.7 μM, Bmax = 11.0 pmol/mg protein). Autoradiographs showed high affinity binding (thought to identify stimulatory guanine nucleotide binding protein (Gs)-linked adenylate cyclase) to all renal structures known to possess hormone sensitive adenylate cyclase, including all tubular segments, glomeruli and blood vessels. High concentrations of binding were associated with a portion of the proximal tubule and with papillary collecting tubules and ducts.

Original languageEnglish
Pages (from-to)1019-1028
Number of pages10
JournalBiochemical Pharmacology
Issue number6
Publication statusPublished - 15 Mar 1990

Cite this