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Eukaryotic elongation factors

"EF2" redirects here. For the tornado intensity rating, see Enhanced Fujita Scale.

Eukaryotic elongation factors are very similar to those in prokaryotes.

Elongation in eukaryotes is carried out with two elongation factors: eEF-1 and eEF-2.

  • The first is eEF-1, and has two subunits, α and βγ. α acts as counterpart to prokaryotic EF-Tu, mediating the entry of the aminoacyl tRNA into a free site of the ribosome. βγ acts as counterpart to prokaryotic EF-Ts, serving as the guanine nucleotide exchange factor for α, catalyzing the release of GDP from α.
  • The second elongation factor is eEF-2, the counterpart to prokaryotic EF-G, catalyzing the translocation of the tRNA and mRNA down the ribosome at the end of each round of polypeptide elongation.

External links

  • Explaining the function of eukaryotic elongation factors