Eukaryotic RNA polymerases
- Created by: Ellie0o0o
- Created on: 27-04-15 15:18
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- Eukaryotic RNA Polymerases
- 4
- Nuclear x3
- RNA Polymerase 1
- Most rRNA
- (The ribosome is number 1)
- Most rRNA
- RNA Polymerase 2
- mRNA, most sRNA, miRNA
- Transcription and gene regulation
- mRNA, most sRNA, miRNA
- RNA Polymerase 3
- tRNA, 5SRNA
- Translation, the final step
- 5S RNA is ribosomal
- tRNA, 5SRNA
- RNA Polymerase 1
- Mitochondrial x1
- All different in structure
- Nuclear x3
- Discovered by labeling with radioactive UMP and fractionating cell
- Has additional subunits to prokaryotes
- Core subunits
- Show homology to prokaryote polymerases
- Common subunits
- Additional units shared by all 3 eukaryote RNA Pols
- Specific subunits
- Specific to a particular polymerase
- Core subunits
- More stable than prokaryotic polymerases due to processing
- 4
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