Cryo-electron microscopy determination of G protein-coupled receptor states

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This project aims to address fundamental knowledge gaps in understanding of the molecular mechanisms of peptide hormone G protein-coupled receptor activation. This will be achieved through cryo-electron microscopy determination of the structure and dynamics of key intermediate states in activation. Novel biochemical approaches will be applied to capture these states, using as exemplar the glucagon receptor that has a broad range of pharmacological tools to facilitate isolation of distinct functional states. The knowledge gained from these studies will advance fundamental understanding of physiologically important receptor activation and efficacy, while the approaches developed will enable similar investigation of other receptor classes.