Τρίτη 14 Μαρτίου 2017

Rps3/uS3 promotes mRNA binding at the 40S ribosome entry channel and stabilizes preinitiation complexes at start codons [Biochemistry]

The eukaryotic 43S preinitiation complex (PIC) bearing Met-tRNAiMet in a ternary complex (TC) with eukaryotic initiation factor (eIF)2-GTP scans the mRNA leader for an AUG codon in favorable “Kozak” context. AUG recognition provokes rearrangement from an open PIC conformation with TC bound in a state not fully engaged with the...

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