Transcription termination factor NusA (IPR010213)

Short name: Tscrpt_termination_fac_NusA

Overlapping homologous superfamilies

Domain relationships



This entry describes NusA, or N utilisation substance protein A, a bacterial transcription termination factor. It binds to RNA polymerase alpha subunit and promotes termination at certain RNA hairpin structures. It is named for the interaction in Escherichia coli of Bacteriophage lambda antitermination protein N with the N-utilisation substance, consisting of NusA, NusB, NusE (ribosomal protein S10), and NusG [PMID: 11040219]. This entry represents a region of NusA shared by all bacterial forms, and includes the S1 (IPR003029) and KH RNA binding domains. Proteobacterial forms have an additional C-terminal region, not included in this entry, with two repeats of 50-residue domain rich in acidic amino acids.

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0003723 RNA binding

Cellular Component

No terms assigned in this category.

Contributing signatures

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