Mutations in a GTP-binding motif of eukaryotic elongation factor 1A reduce both translational fidelity and the requirement for nucleotide exchange.

Abstract excerpt

A series of mutations in the highly conserved N(153)KMD(156)GTP-binding motif of the Saccharomyces cerevisiae translation elongation factor 1A (eEF1A) affect the GTP-dependent functions of the protein and increase misincorporation of amino acids in vitro. Two critical regulatory processes of translation elongation, guanine nucleotide exchange and translational fidelity, were analyzed in strains with the N153T,...

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