CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
2 | Mainly Beta |
|
2.170 | Beta Complex |
|
2.170.120 | RNA Polymerase Alpha Subunit; Chain A, domain 2 |
|
2.170.120.12 | DNA-directed RNA polymerase, insert domain |
Domain Context
CATH Clusters
| Superfamily | DNA-directed RNA polymerase, insert domain |
| Functional Family | DNA-directed RNA polymerase subunit alpha |
Enzyme Information
| 2.7.7.6 |
DNA-directed RNA polymerase.
based on mapping to UniProt P0A7Z6
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
-!- Catalyzes DNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time. -!- Can initiate a chain de novo. -!- In eukaryotes three forms of the enzyme have been distinguished on the basis of sensitivity of alpha-amanitin, and the type of RNA synthesized. -!- See also EC 2.7.7.19 and EC 2.7.7.48.
|
UniProtKB Entries (3)
| P0A7Z6 |
RPOA_ECO57
Escherichia coli O157:H7
DNA-directed RNA polymerase subunit alpha
|
| A0A0J4U551 |
A0A0J4U551_KLEPN
Klebsiella pneumoniae
RNA polymerase sigma-54 factor
|
| B7MIX3 |
RPOB_ECO45
Escherichia coli S88
DNA-directed RNA polymerase subunit beta
|
PDB Structure
| PDB | 5UI8 |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Crystal structure of Aquifex aeolicus sigma (N) bound to promoter DNA and the structure of sigma (N)-holoenzyme.
Proc. Natl. Acad. Sci. U.S.A.
|
