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)

P20436
RPAB3_YEAST
Saccharomyces cerevisiae S288C
DNA-directed RNA polymerases I, II, and III subunit RPABC3

PDB Structure

PDB 5M3M
External Links
Method ELECTRON MICROSCOPY
Organism
Primary Citation
Structure of RNA polymerase I transcribing ribosomal DNA genes.
Neyer, S., Kunz, M., Geiss, C., Hantsche, M., Hodirnau, V.V., Seybert, A., Engel, C., Scheffer, M.P., Cramer, P., Frangakis, A.S.
Nature