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Researchers have discovered hundreds of different receptors that act through G-proteinsóRodbell's transducer molecules. More than 65% of all prescription drugs act on such receptors, and a significant portion of the human genome codes for these receptors. Defective G-proteins cause a number of diseases.

Work continues as researchers attempt to identify and determine the structure of all the body's receptors and to clarify the role they play in normal functions like human growth, detecting light and odor, and in fighting infection. Here are just three conditions where G-proteins are important:

Inherited Night Blindness
McCune Albright Syndrome

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