Table 1

Characteristics of the specific binding of [3H]prazosin to GFP-tagged forms of the hamster α1b-adrenoceptor

α1b-Adrenoceptor-GFP Construct[3H]PrazosinBmax
Kd, nM pmol/mg
Wild type0.09  ± 0.027.0  ± 1.5
3CAM0.12  ± 0.024.0  ± 0.8
A293E0.10  ± 0.0222  ± 4
D142A0.10  ± 0.0223  ± 3
M80.07  ± 0.0211  ± 1

The specific binding of various concentrations of [3H]prazosin to membranes of stable clones expressing each of the α1b-adrenoceptor-GFP constructs was measured, and B max and K d values were estimated. Data are presented as mean ± S.E. from three independent experiments.