InterPro domain: IPR005118

The transcription-repair coupling factor (TRCF, product of the mfd gene) couples transcription and DNA repair in bacteria. TRCF removes transcription elongation complexes stalled at DNA lesions and recruits the nucleotide excision repair (NER) machinery to the site. This protein, comprised of eight domains, including region of structurally similar to UvrB, shows to distinct activities: the relief of transcription-dependent inhibition of nucleotide excision repair (NER) by recognition and ATP-dependent removal of a stalled RNAP covering the damaged DNA; and the stimulation of DNA repair by recruitment of the Uvr(A)BC endonuclease. The C-terminal region of TRCF have been shown to be necessary for RNAP displacement [ 1 , 2 ].

1. Structure and function of transcription-repair coupling factor. I. Structural domains and binding properties. J. Biol. Chem. 270, 4882-9
2. A DNA translocation motif in the bacterial transcription--repair coupling factor, Mfd. Nucleic Acids Res. 31, 6409-18