RNA polymerase, beta subunit, protrusion (IPR007644)

Short name: RNA_pol_bsu_protrusion

Overlapping homologous superfamilies


Domain relationships



RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial and chloroplast polymerases). This domain forms one of the two distinctive lobes of the Rpb2 structure. This domain is also known as the protrusion domain [PMID: 3116266]. The other lobe, RNA polymerase Rpb2, domain 2, is nested within this domain.

GO terms

Biological Process

GO:0006351 transcription, DNA-templated

Molecular Function

GO:0003677 DNA binding
GO:0003899 DNA-directed 5'-3' RNA polymerase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.