LECTURE-32_Transcription

LECTURE-32_Transcription - Lecture #32 TRANSCRIPTION...

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Lecture #32 TRANSCRIPTION Campbell and Reece 7 th  Edition Chapter 17 Pages 315-333 Nisson Schechter nisson.schechter@stonybrook.edu
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OBJECTIVES Define transcription. Compare and contrast the flow of genetic  information in prokaryotic and eukaryotic cells. List the minimum requirements for RNA  polymerization. Describe the main post-transcriptional events of  eukaryotic mRNA processing. 
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Maintenance and expression of genetic information Central Dogma: (information flow) DNA RNA Protein Transcription = RNA synthesis
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Pro and eukaryote transcription and translation are  separated in space and time.
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Polycistronic mRNA An mRNA that codes for more than one protein –  commonly found in bacteria but not in eukaryotes. 
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The basic biochemistry for RNA polymerization is the same.
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polymerase In prokaryotic cell essentially one polymerase is  responsible for the synthesis of all the different  RNAs (mRNA, rRNA, tRNA). This is not the case for eukaryotic cells.
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LECTURE-32_Transcription - Lecture #32 TRANSCRIPTION...

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