1. This increases the activity of eEF-2K against its substrate, elongation factor 2. 2. Studies have also characterized the protein as an RNA polymerase II elongation factor . 3. EF2 kinase Blocks phosphorylation of elongation factor 2 thus blocking protein synthesis. 4. Non-viral promoter, such as the elongation factor ( EF )-1 promoter, is also known. 5. GDPCP was used to examine the prokaryotic elongation factor EF-Tu. 6. Elongation factors are also a target for pathogen toxins.7. It phosphorylates eukaryotic elongation factor 2 ( EEF2 ) and thus inhibits the EEF2 function. 8. Competition for actin binding sites can also regulate CapZ binding, as seen with filament elongation factors . 9. In yeast U18 is located in the introns of Elongation Factor 1 beta ( EF1-beta ). 10. E4 enzymes, or ubiquitin-chain elongation factors , are capable of adding pre-formed polyubiquitin chains to substrate proteins.