Eukaryotic Elongation Factors
Eukaryotic Elongation Factors - Related Videos
02:35
Transcription Elongation Factors
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2020
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene. The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
02:35
Transcription Elongation Factors
0 Views •
2023
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene. The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
02:40
The Eukaryotic Promoter Region
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2020
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
00:58
Eukaryotic RNA Polymerases
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2025
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action. All three eukaryotic RNAPs require specific transcription factors, of which the...
10:46
Novel Metrics to Characterize Embryonic Elongation of the Nematode Caenorhabditis elegans
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Cited by 3 •
2016
Here we detail protocols specifically designed to monitor morphogenic defects that occur during early and late phases of embryonic elongation of the nematode Caenorhabditis elegans. Ultimately, these protocols are designed to identify genes that regulate these phases and to characterize their differential requirements along the antero-posterior axis of the embryo.
FAQs
eEF1A uses GTP to deliver aminoacyl-tRNAs, the tRNAs carrying amino acids, to the ribosome. This delivery supports codon recognition, linking the incoming tRNA to the correct messenger RNA information during elongation. Consequently, eEF1A connects energy use with a key accuracy checkpoint in each cycle of translation.
eEF2 acts after peptide-bond formation, using GTP to promote movement of the ribosome along the messenger RNA. In contrast, eEF1A functions earlier by delivering aminoacyl-tRNAs and supporting codon recognition. Their sequential roles divide elongation into tRNA delivery and ribosome movement, allowing the cycle to proceed efficiently.
Changes in the abundance or modification of elongation factors can influence how cells regulate translation. Because translation converts messenger RNA information into proteins, altered factor status may affect cell growth, stress responses, and disease biology. These relationships make factor regulation important when interpreting changes in cellular behavior.
Coordinated eEF1A and eEF2 activity links two essential events in one translation cycle: accurate aminoacyl-tRNA delivery and ribosome movement after peptide-bond formation. Studying this coordination helps explain how cells control gene expression at the level of protein production, rather than only at the level of messenger RNA.
It can clarify how cells regulate gene expression through translation and how changes in protein-synthesis control relate to growth or stress responses. Examining these factors also provides a framework for connecting translation behavior with disease biology. This context is useful for identifying regulatory changes that warrant further investigation.
Their essential positions in elongation make eEF1A and eEF2 molecular targets for research into translation inhibitors and therapeutic strategies. Research can therefore relate factor function to changes in protein synthesis and disease biology, while examining how translation regulation affects cellular outcomes in different biological settings.