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  Domain Name: RNAP_largest_subunit
Largest subunit of RNA polymerase (RNAP), C-terminal domain. RNA polymerase (RNAP) is a large multi-subunit complex responsible for the synthesis of RNA. It is the principal enzyme of the transcription process, and is the final target in many regulatory pathways that control gene expression in all living cells. At least three distinct RNAP complexes are found in eukaryotic nuclei, RNAP I, RNAP II, and RNAP III, for the synthesis of ribosomal RNA precursor, mRNA precursor, and 5S and tRNA, respectively. A single distinct RNAP complex is found in prokaryotes and archaea, which may be responsible for the synthesis of all RNAs. Structure studies revealed that prokaryotic and eukaryotic RNAPs share a conserved crab-claw-shape structure. The largest and the second largest subunits each make up one clamp, one jaw, and part of the cleft. The largest RNAP subunit (Rpb1) interacts with the second-largest RNAP subunit (Rpb2) to form the DNA entry and RNA exit channels in addition to the catalytic center of RNA synthesis. The region covered by this domain makes up part of the foot and jaw structures. In archaea, some photosynthetic organisms, and some organelles, this domain exists as a separate subunit, while it forms the C-terminal region of the RNAP largest subunit in eukaryotes and bacteria.
No pairwise interactions are available for this conserved domain.

Total Mutations Found: 2
Total Disease Mutations Found: 0
This domain occurred 3 times on human genes (5 proteins).

 If you've navigated here from a protein, hovering over a position on the weblogo will display the corresponding protein position for that domain position.

 The histograms below the weblogo indicate mutations found on the domain. Red is for disease (OMIM) and blue is for SNPs.

 Functional Features are displayed as orange boxes under the histograms. You can choose which features are displayed in the box below.

Range on the Protein:  

   Protein ID            Protein Position

Domain Position:  

Feature Name:Total Found:
Rpb1 - Rpb2 interaction s
Rpb1 - Rpb5 interaction s
Rpb1 - Rpb6 interaction s
DNA binding site

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Please Cite: Peterson, T.A., Adadey, A., Santana-Cruz ,I., Sun, Y., Winder A, Kann, M.G., (2010) DMDM: Domain Mapping of Disease Mutations. Bioinformatics 26 (19), 2458-2459.

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