CATH Classification

Domain Context

CATH Clusters

Superfamily 3.90.940.10
Functional Family DNA-directed RNA polymerase subunit omega

Enzyme Information

2.7.7.6
DNA-directed RNA polymerase.
based on mapping to UniProt P0A800
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 (1)

P0A800
RPOZ_ECOLI
Escherichia coli K-12
DNA-directed RNA polymerase subunit omega

PDB Structure

PDB 5IPL
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Structures of E. coli sigma S-transcription initiation complexes provide new insights into polymerase mechanism.
Liu, B., Zuo, Y., Steitz, T.A.
Proc.Natl.Acad.Sci.USA
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