Article
Overexpression of eukaryotic translation elongation factor 3 impairs Gcn2 protein activation.
The Journal of biological chemistry - 2 Nov 2012
Visweswaraiah Jyothsna, Lee Su Jung, Hinnebusch Alan G, Sattlegger Evelyn
Abstract excerpt
In eukaryotes, phosphorylation of translation initiation factor 2α (eIF2α) by the kinase Gcn2 (general control nonderepressible 2) is a key response to amino acid starvation. Sensing starvation requires that Gcn2 directly contacts its effector protein Gcn1, and both must contact the ribosome. We have proposed that Gcn2 is activated by uncharged tRNA bound to the ribosomal decoding (A) site, in a manner...
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