CATH Domain 2a6hC05

CATH Classification

Level	CATH Code	Description
	2	Mainly Beta
	2.40	Beta Barrel
	2.40.50	OB fold (Dihydrolipoamide Acetyltransferase, E2P)
	2.40.50.100	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain

Domain Context

CATH Clusters

Superfamily	2.40.50.100
Functional Family

Enzyme Information

2.7.7.6

DNA-directed RNA polymerase.

based on mapping to UniProt Q8RQE9

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)

Q8RQE9

RPOB_THET8

Thermus thermophilus HB8

DNA-directed RNA polymerase subunit beta

PDB Structure

PDB	2A6H
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism
Primary Citation	Structural basis of transcription inhibition by antibiotic streptolydigin. Temiakov, D., Zenkin, N., Vassylyeva, M.N., Perederina, A., Tahirov, T.H., Kashkina, E., Savkina, M., Zorov, S., Nikiforov, V., Igarashi, N., Matsugaki, N., Wakatsuki, S., Severinov, K., Vassylyev, D.G. Mol.Cell