Wednesday, August 12, 2009

Compare & Contrast Transcription in Eukaryotes & Prokaryotes.




Contrast




  • A lot of the pioneering work on transcription was carried out in prokaryotes, most notably in the bacteria E. Coli.


  • Prokaryotes have a single RNA polymerase.


  • Eukaryotes have 3 different RNA polymerase.


  • Transcription in eukaryotes is more complex.


  • Eukaryotic RNA polymerase cannot initiate transcription by themselves, they need the help of a set of proteins called the basic transcription factors.


Compare





  • The enzyme that carries out transcription is called RNA polymerase, it consist of 4 polypeptides.


  • Transcription can be divided into 3 phases: initiation, elongation, and termination.

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