Sensory rhodopsin II (rainbow colored) embedded in a
lipid bilayer (heads red and tails blue) with
Transducin (G
t) below it. G
t? is colored red, G
t? blue, and G
t? yellow. There is a bound
GDP molecule in the G
t?-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.
