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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Investigation of rhodopsin catalyzed G-protein GTP-binding using [35S] GTP gamma S--effects of regeneration and hydroxylamine.

A simple reconstitution system for studying rhodopsin-catalyzed G-protein GTP-binding is described. Purified rhodopsin is recombined with a G-protein containing extract in the presence of [35S]GTP gamma S and after incubation the reaction is stopped by rapid cooling and filtration. The system has been used to study the effects of 11-cis-retinal and hydroxylamine on R*-catalyzed G-protein GTP-binding. Since both these compounds greatly reduced binding, our results provide further evidence that it is the rhodopsin intermediate metarhodopsin II which interacts with G-protein.[1]

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