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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

B2-kinin receptor like binding in rat glomerular membranes.

Incubation of a radiolabeled bradykinin analog, [125I]-Tyr8-BK with a crude membrane preparation obtained from isolated rat glomeruli revealed a time dependent binding. The binding was saturable, reversible and was a linear function of protein membrane concentration. The radiolabeled Tyr8-BK bound to a single class of binding sites with an equilibrium dissociation constant (KD) of 3.9 +/_ 0.7 nM and a density (Bmax) of 31 +/- 5 fmol/mg protein. The BK-receptor complex was not affected by angiotensin II or by arginine vasopressin and atrial natriuretic factor. BK binding was reversed by bradykinin (Ki = 0.3 10(-9) M), and by other kinin analogs in the following order of potency: Lys-BK, Met-Lys-BK, Thi5,8-D Phe7-BK. However, Des-Arg9-BK had no effect on binding of the radiolabelled BK. These results are consistent with the presence of a B2-kinin like receptor in rat glomeruli.[1]


  1. B2-kinin receptor like binding in rat glomerular membranes. Bascands, J.L., Pécher, C., Cabos, G., Girolami, J.P. Biochem. Biophys. Res. Commun. (1989) [Pubmed]
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