Current Opinion in Structural Biology
Current Opinion in Structural Biology
5 years ago

RNA polymerase I and III: similar yet unique

RNA polymerase I and III: similar yet unique
The majority of non-protein-coding RNAs present in eukaryotic cells comprises rRNAs, tRNAs and U6 snRNA that are involved in protein biosynthesis and are synthesized by DNA-dependent-RNA polymerase I and III. The transcription cycle (initiation, elongation and termination) has similar principles in all three nuclear RNA polymerases with specific features that are reflected back in their structures. Recently, owing to the ‘resolution revolution’ in electron cryo-microscopy, there has been a significant advancement in the understanding of these molecular machines. Here, we highlight the structure–function adaptation in specificity and activity of these molecular machines and present parallels and distinctions between their transcription mechanisms.

Publisher URL: www.sciencedirect.com/science

DOI: S0959440X17300313

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