Table 1.

Kinetic characteristics of control and Gβ5-deficient flash responses

Strains Integration time (sec) Dim flash τrec (sec) Time-to-peak (msec) Dominant τrec (sec)
Gβ5+/+ 0.26 ± 0.02 (30) 0.17 ± 0.02 (28) 89 ± 3 (30) 0.19 ± 0.01 (21)
Gβ5+/− 0.24 ± 0.02 (13) 0.16 ± 0.01 (14) 104 ± 3 (14) 0.19 ± 0.02 (16)
Gβ5−/− 2.7 ± 0.2 (26) 2.5 ± 0.2 (26) 196 ± 30 (14) 8.8 ± 0.3 (17)
  • All values are means ± SEMs. The number of rods used in each measurement is indicated in parentheses. Dim flash τrec refers to the time constant of the exponential decay fitted to the recovery of the average dim flash response of each cell. The dominant τrec refers to the slope of the linear relation between time in saturation and log of intensity of the flash (see Results).