Dynamics of beta2-adrenergic receptor-ligand complexes on living cells.

  title={Dynamics of beta2-adrenergic receptor-ligand complexes on living cells.},
  author={Oliver Hegener and Lars Prenner and Frank Runkel and Stephan L Baader and Joachim Kappler and Hanns H{\"a}berlein},
  volume={43 20},
The agonist-induced dynamic regulation of the beta(2)-adrenergic receptor (beta(2)-AR) on living cells was examined by means of fluorescence correlation spectroscopy (FCS) using a fluorescence-labeled arterenol derivative (Alexa-NA) in hippocampal neurons and in alveolar epithelial type II cell line A549. Alexa-NA specifically bound to the beta(2)-AR of neurons with a K(D) value of 1.29 +/- 0.31 nM and of A549 cells with a K(D) of 5.98 +/- 1.62 nM. The receptor density equaled 4.5 +/- 0.9… CONTINUE READING


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