CATH Classification

Domain Context

CATH Clusters

Superfamily 3.90.1070.20
Functional Family DNA-directed RNA polymerase subunit beta

Enzyme Information

2.7.7.6
DNA-directed RNA polymerase.
based on mapping to UniProt P22138
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)

P20434
RPAB1_YEAST
Saccharomyces cerevisiae S288C
DNA-directed RNA polymerases I, II, and III subunit RPABC1

PDB Structure

PDB 5W66
External Links
Method ELECTRON MICROSCOPY
Organism
Primary Citation
Structural mechanism of ATP-independent transcription initiation by RNA polymerase I.
Han, Y., Yan, C., Nguyen, T.H.D., Jackobel, A.J., Ivanov, I., Knutson, B.A., He, Y.
Elife