Role of a PAS sensor domain in the Mycobacterium tuberculosis transcription regulator Rv1364c

  • Jaiswal R
  • Manjeera G
  • Gopal B
  • 26


    Mendeley users who have this article in their library.
  • 6


    Citations of this article.


The Mycobacterium tuberculosis transcriptional regulator Rv1364c regulates the activity of the stress response σ factor σF. This multi-domain protein has several components: a signaling PAS domain and an effector segment comprising of a phosphatase, a kinase and an anti-anti-σ factor domain. Based on Small Angle X-ray Scattering (SAXS) data, Rv1364c was recently shown to be a homo-dimer and adopt an elongated conformation in solution. The PAS domain could not be modeled into the structural envelope due to poor sequence similarity with known PAS proteins. The crystal structure of the PAS domain described here provides a structural basis for the dimerization of Rv1364c. It thus appears likely that the PAS domain regulates the anti-σ activity of Rv1364c by oligomerization. A structural comparison with other characterized PAS domains reveal several sequence and conformational features that could facilitate ligand binding - a feature which suggests that the function of Rv1364c could potentially be governed by specific cellular signals or metabolic cues. © 2010 Elsevier Inc.

Author-supplied keywords

  • Dimerization
  • Environmental sensor
  • PAS
  • Rv1364c
  • Transcriptional regulator

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Ravi Kumar Jaiswal

  • G. Manjeera

  • B. Gopal

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free