Gene Insertion: Transcription in Eukaryotic Cells

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SUMMARY

Gene insertion into eukaryotic cells can lead to the transcription of both the original and inserted genes, provided that the tail of the inserted gene is removed to allow RNA polymerase to continue transcription. While this process can create fusion proteins, such as fluorescently tagged proteins, the resulting protein may be non-functional if the insertion disrupts the reading frame or occurs within an intronic region, which would be eliminated during splicing. Understanding these mechanisms is crucial for genetic engineering applications.

PREREQUISITES
  • Basic understanding of eukaryotic gene transcription mechanisms
  • Knowledge of RNA polymerase function and transcription termination
  • Familiarity with protein translation and the significance of reading frames
  • Concept of splicing and its role in mRNA processing
NEXT STEPS
  • Research the process of gene insertion techniques, such as CRISPR-Cas9
  • Learn about the mechanisms of RNA polymerase II in eukaryotic transcription
  • Study the principles of creating and analyzing fusion proteins
  • Explore the implications of intron-exon structures in gene expression
USEFUL FOR

Genetic engineers, molecular biologists, and researchers involved in gene therapy or protein engineering will benefit from this discussion.

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If one gene is inserted into the sequence of a second gene, will both genes by transcribed in the eukaryotic cell?
 
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Yes, most likely, the whole sequence would be transcribed... as long as the tail of the inserted gene was cut off so that the polymerase would continue to read through it.

Although the translation would probably result in a non functioning protein, and if it was inserted into and intronic region it would be cut out in splicing.
 
Yes, that is how fusion proteins are made (fluorescently tagged, for instance). Ofcourse it needs to be inserted in frame and there is always a chance that the fusion results in a non-functional protein.
 

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