Posttranslational regulation of Mycobacterium tuberculosis extracytoplasmic-function sigma factor sigma L and roles in virulence and in global regulation of gene expression

Infect Immun. 2006 Apr;74(4):2457-61. doi: 10.1128/IAI.74.4.2457-2461.2006.

Abstract

In this report, we demonstrate that SigL is posttranslationally regulated by a specific anti-sigma factor, RslA, and contributes to the expression of at least 28 genes. Several of these genes could mediate important cell envelope-related processes. Importantly, a sigL-rslA mutant strain was significantly attenuated in a mouse model of infection.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Base Sequence
  • Gene Expression Regulation, Bacterial / immunology*
  • Mice
  • Mice, Inbred BALB C
  • Mice, Inbred C57BL
  • Mice, Inbred DBA
  • Molecular Sequence Data
  • Mycobacterium tuberculosis / genetics*
  • Mycobacterium tuberculosis / pathogenicity
  • Protein Processing, Post-Translational / immunology*
  • Sigma Factor / biosynthesis
  • Sigma Factor / genetics*
  • Sigma Factor / physiology
  • Tuberculosis, Pulmonary / microbiology
  • Tuberculosis, Pulmonary / mortality
  • Virulence Factors / biosynthesis
  • Virulence Factors / genetics*
  • Virulence Factors / physiology

Substances

  • Sigma Factor
  • Virulence Factors