![](//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Rhodopsin-transducin.png/250px-Rhodopsin-transducin.png) Sensory rhodopsin II (rainbow colored) embedded in a lipid bilayer (heads red and tails blue) with Transducin (Gt) below it. Gt? is colored red, Gt? blue, and Gt? yellow. There is a bound GDP molecule in the Gt?-subunit and a bound retinal (black) in the rhodopsin. The N-terminus of rhodopsin is red and the C-terminus blue. Presumed anchoring of transducin to the membrane has been drawn in black. |