CATH Classification

Domain Context

CATH Clusters

Superfamily RNA polymerase, RBP11-like subunit
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)

P00579
RPOD_ECOLI
Escherichia coli K-12
RNA polymerase sigma factor RpoD
B7MFL0
RPOZ_ECO45
Escherichia coli S88
DNA-directed RNA polymerase subunit omega
P0A8T8
RPOC_ECO57
Escherichia coli O157:H7
DNA-directed RNA polymerase subunit beta'

PDB Structure

PDB 6B6H
External Links
Method ELECTRON MICROSCOPY
Organism
Primary Citation
Structural basis of bacterial transcription activation.
Liu, B., Hong, C., Huang, R.K., Yu, Z., Steitz, T.A.
Science
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