This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Structural Changes in the Ribosomal Pre-Initiation Complex During eukaryotic translation initiation ribosomal 43S pre-initiation complexes scan mRNAs for the correct AUG codon at which to begin translation. Start codon recognition triggers GTP hydrolysis by eIF2, committing the complex to engagement at that point on the mRNA. While fidelity at this step is essential for life, the nature of the codon recognition event and the mechanism by which it activates GTP hydrolysis are poorly understood.
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