How vision sends its message to the brain
At the center of the discovery is the signaling of rhodopsin to transducin. Rhodopsin is a pigment in the eye that helps detect light. Transducin is a protein (sometimes called "GPCR") which ultimately signals the brain that light is present. The researchers were able to "freeze frame" the chemical communication between rhodopsin and transducin to study how this takes place and what goes wrong at the molecular level in certain disorders. (Science Blog)
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