Structural basis of hypoxic gene regulation by the Rv0081 transcription factor of Mycobacterium tuberculosis.

Ashwani Kumar , Swastik Phulera, Arshad Rizvi, Parshuram J. Sonawane, Hemendra S. Panwar, Sharmistha Banerjee, Arvind Sahu , Shekhar C. Mande

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The transcription factor Rv0081 of Mycobacterium tuberculosis controls hypoxic gene expression and acts as a regulatory hub in the latent phase of tuberculosis (TB) infection. We report here the crystal structure of Rv0081 at 2.9 Å resolution revealing that it belongs to the well-known ArsR/SmtB family proteins. However, unlike other members in this family, Rv0081 has neither a metal-binding domain nor does it possess Cys residues, suggesting an alternate mechanism of gene regulation. Our structural and biochemical analyses suggest the molecular basis for the recognition of self-regulatory DNA sequences and a plausible mechanism of regulation of Rv0081 in the latent phase of TB infection. DATABASE: Structural data are available in the Protein Data Bank under the accession number - 6JMI.
Original languageEnglish
JournalFEBS Letters
Issue number9
Early online date28 Mar 2019
Publication statusPublished - 26 Apr 2019
Externally publishedYes


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