The Mfd protein is the transcription-repair coupling factor (TRCF) in Mycobacterium smegmatis

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Adebali, Ogün and Yang, Yanyan and Neupane, Pradeep and Dike, Nneka I. and Boltz, Julia L. and Kose, Cansu and Braunstein, Miriam and Selby, Christopher P. and Sancar, Aziz and Lindsey-Boltz, Laura A. (2023) The Mfd protein is the transcription-repair coupling factor (TRCF) in Mycobacterium smegmatis. Journal of Biological Chemistry, 299 (3). ISSN 0021-9258 (Print) 1083-351X (Online)

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Abstract

In vitro and in vivo experiments with Escherichia coli have shown that the Mfd translocase is responsible for transcription-coupled repair, a subpathway of nucleotide excision repair involving the faster rate of repair of the transcribed strand than the nontranscribed strand. Even though the mfd gene is conserved in all bacterial lineages, there is only limited information on whether it performs the same function in other bacterial species. Here, by genome scale analysis of repair of UV-induced cyclobutane pyrimidine dimers, we find that the Mfd protein is the transcription-repair coupling factor in Mycobacterium smegmatis. This finding, combined with the inverted strandedness of UV-induced mutations in WT and mfd- E. coli and Bacillus subtilis indicate that the Mfd protein is the universal transcription-repair coupling factor in bacteria.
Item Type: Article
Uncontrolled Keywords: excision repair-sequencing; nucleotide excision repair; transcription-coupled repair; tuberculosis; UvrD
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Ogün Adebali
Date Deposited: 05 Aug 2023 12:23
Last Modified: 05 Aug 2023 12:23
URI: https://research.sabanciuniv.edu/id/eprint/47107

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