Table 5

Desensitization of HA-H2r in COS-7 cells overexpressing GRK

COS-7 transfectiont1/2
min
pCEFL-HA-H2r0.49  ± 0.01 (5)
+ pCEFL-GRK20.25  ± 0.05 (3)*
+ pCEFL-GRK30.30  ± 0.01 (3)*
+ pCEFL-GRK50.45  ± 0.05 (3)
+pCEFL-GRK60.48  ± 0.02 (3)

The apparent rate of desensitization was calculated from the data in Fig. 4C using the equation for monoexponential decay. The table shows the mean ± S.E.M.; number of determinations (n) is in parentheses. The apparent rate of desensitization of the pCEFL-HA-H2r and the pCEFL-GRK2 and GRK3 were compared using an unpairedt test and found to be significantly different (* p < 0.01).