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13629 Ensembl ENSG00000167658 ENSMUSG00000034994 UniProt P13639 P58252 RefSeq (mRNA) NM_001961 NM_007907 RefSeq (protein) NP_001952 NP_031933 Location (UCSC) Chr 19: 3.98 – 3.99 Mb Chr 10: 81.01 – 81.02 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Eukaryotic elongation factor 2 is a protein that in humans is encoded by the EEF2 gene. It is the archaeal and eukaryotic ...
The steps in this microcycle are (1) positioning the correct aminoacyl-tRNA in the A site of the ribosome, which is brought into that site by eEF1, (2) forming the peptide bond, and (3) shifting the mRNA by one codon relative to the ribosome with the help of eEF2. Unlike bacteria, in which translation initiation occurs as soon as the 5' end of ...
Elongation is the most rapid step in translation. [3] In bacteria , it proceeds at a rate of 15 to 20 amino acids added per second (about 45-60 nucleotides per second). [ citation needed ] In eukaryotes the rate is about two amino acids per second (about 6 nucleotides read per second).
eIF2 is a heterotrimer of a total molar mass of 126 kDa that is composed of the three sub-units: α (sub-unit 1), β (sub-unit 2), and γ (sub-unit 3). The sequences of all three sub-units are highly conserved (pairwise amino acid identities for each sub-unit range from 47 to 72% when comparing the proteins of Homo sapiens and Saccharomyces cerevisiae).
The activity of eEF-2K is dependent on calcium and calmodulin.Activation of eEF-2K proceeds by a sequential two-step mechanism. First, calcium-calmodulin binds with high affinity to activate the kinase domain, triggering rapid autophosphorylation of Thr-348.
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Due to the fact that translation elongation is an irreversible process, there are few known mechanisms of its regulation. However, it has been shown that translational efficiency is reduced via diminished tRNA pools, which are required for the elongation of polypeptides.
The ribosome is a prominent drug target for antibacterials, which interfere with translation at different stages of the elongation cycle [44] Most clinically relevant translation compounds are inhibitors of bacterial translation, but inhibitors of eukaryotic translation may also hold therapeutic potential for application in cancer or antifungal ...