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. 2003 Dec 22;141(2):277–284. doi: 10.1038/sj.bjp.0705504

Table 1.

Endocytic and recycling rate constants (min−1) in EcR293:β2-adrenoceptor cell lines

  ke kr (15 min) kr (6 h)
Untransfected 0.168±0.013 0.121±0.009 0.086±0.007
GRK5 (EtOH) 0.229±0.013 0.139±0.009 0.118±0.013
GRK5 (PON) 0.197±0.009 0.124±0.011 0.085±0.010

Individual rate constants for β2-adrenoceptor endocytosis (ke) and recycling (kr) following 15 min and 6 h exposures to isoprenaline were determined as previously described (Morrison et al., 1996). Rate constants are expressed as means±s.e.m. from three independent experiments.