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The rhodopsin-transducin complex houses two distinct rhodopsin molecules.

Jastrzebska B, Ringler P, Palczewski K, Engel A,
Journal of Structural Biology (2013) 182:164-72 PublishedPSI:Biology  
Transcontinental EM Initiative for Membrane Proteins

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Upon illumination the visual receptor rhodopsin (Rho) transitions to the activated form Rho(∗), which binds the heterotrimeric G protein, transducin (Gt) causing GDP to GTP exchange and Gt dissociation. ...
23458690  
PMC3633645  
10.1016/j.jsb.2013.02.014  
34 (Last update: 02/16/2019 7:56:14pm)  
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