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

Elongation factor Tu: a regulatory GTPase with an integrated effector.

Several elongation factors involved in protein synthesis are GTPases that share structural and mechanistic homology with the large family of proteins including Ras and heterotrimeric receptor-coupled G proteins. The structure of elongation factor Tu ( EF-Tu) from thermophilic bacteria, in its 'active' GTP-bound form, has recently been solved by X-ray crystallography. Comparison of this structure with the structure of Escherichia coli EF-Tu bound to GDP reveals a dramatic conformational change that is dependent on GTPase activity. The mechanism of this conformational change and of GTPase activation are discussed, and a model for the EF-Tu-GTP complex with aminoacyl-tRNA is presented.[1]


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