Antirepressor protein, C-terminal (IPR005039)

Short name: Ant_C

Overlapping homologous superfamilies


Domain relationships



This entry represents the C-terminal domain of the antirepressor protein (Ant) from Enterobacteria phage P1. Prophages P1 and P7 exist as unit copy DNA plasmids in the bacterial cell. Maintenance of the prophage state requires the continuous expression of two repressors: (i) C1 is a protein which negatively regulates the expression of lytic genes including the C1 inactivator gene coi, and (ii) C4 is an antisense RNA which specifically inhibits the synthesis of an anti-repressor Ant.

This domain, also known as KilAC domain, may be a DNA-binding domain of the viral regulatory proteins [PMID: 11897024].

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0003677 DNA binding

Cellular Component

No terms assigned in this category.

Contributing signatures

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