Figure 3 of
Ostrer, Mol Vis 3:16, 1997.
Figure 3. Light-dependent transducin activation by wild-type and mutant (P307L) green opsins
Following induction of pGrn and pGrnP307L, membrane preparations were made, then tested for their ability to bind GTP (35S) in the presence of bovine rod transducin. The mutant opsin was able to activate transducin, albeit less efficiently than the wild type.