Results 31 to 40 of about 1,348,208 (253)

The Anti-sigma Factor RsiV Is a Bacterial Receptor for Lysozyme: Co-crystal Structure Determination and Demonstration That Binding of Lysozyme to RsiV Is Required for σV Activation. [PDF]

open access: yesPLoS Genet, 2016
σ factors provide RNA polymerase with promoter specificity in bacteria. Some σ factors require activation in order to interact with RNA polymerase and transcribe target genes.
Hastie JL   +5 more
europepmc   +2 more sources

RshA, an anti‐sigma factor that regulates the activity of the mycobacterial stress response sigma factor SigH [PDF]

open access: yesMolecular Microbiology, 2003
SummarySigH, an alternative sigma factor of Mycobacterium tuberculosis,  is  a  central regulator  of  the  response to oxidative and heat stress. Exposure to these stresses results in increased expression of sigH itself, and of genes encoding additional regulators and effectors of the bacterial response to these stresses.
T. Song, S. Dove, Kon-Ho Lee, R. Husson
semanticscholar   +3 more sources

Transcriptional regulation of the operon encoding stress-responsive ECF sigma factor SigH and its anti-sigma factor RshA, and control of its regulatory network in Corynebacterium glutamicum

open access: yesBMC Genomics, 2012
Background The expression of genes in Corynebacterium glutamicum, a Gram-positive non-pathogenic bacterium used mainly for the industrial production of amino acids, is regulated by seven different sigma factors of RNA polymerase, including the stress ...
Busche Tobias   +4 more
doaj   +2 more sources

A mutation in anti-sigma factor MAB_3542c may be responsible for tigecycline resistance in Mycobacterium abscessus.

open access: yesJournal of Medical Microbiology, 2018
In this study, we characterized 7C, a spontaneous mutant selected from tigecycline-susceptible Mycobacterium abscessus ATCC 19977. Whole-genome sequencing (WGS) was used to identify possible resistance determinants in this mutant.
H. Ng   +4 more
semanticscholar   +3 more sources

Interactions between a Bacillus subtilis anti-sigma factor (RsbW) and its antagonist (RsbV) [PDF]

open access: yesJournal of Bacteriology, 1994
The activity of sigma B, a secondary sigma factor of Bacillus subtilis, is primarily controlled by an anti-sigma factor protein (RsbW) that binds to sigma B and blocks its ability to form an RNA polymerase holoenzyme (E-sigma B). Inhibition of sigma B by RsbW is counteracted by RsbV, a protein that is essential for the activation of sigma B-dependent ...
A. Dufour, W. Haldenwang
semanticscholar   +3 more sources

The N-Terminal Domain of LIC12756 Is the Key Determinant of This Protein’s Anti-Sigma Activity Toward LIC12757 in Pathogenic Leptospira interrogans [PDF]

open access: yesPathogens
Extracytoplasmic function (ECF) σ factors are central regulators of bacterial adaptation to environmental changes. The genome of Leptospira interrogans encodes 11 such factors, including LIC12757. Previous studies have shown that LIC12757 is regulated by
Sabina Kędzierska-Mieszkowska
doaj   +2 more sources

A unique sigma/anti-sigma system in the actinomycete Actinoplanes missouriensis

open access: yesNature Communications, 2023
Bacteria of the genus Actinoplanes form sporangia that contain dormant sporangiospores which, upon contact with water, release motile spores (zoospores) through a process called sporangium dehiscence.
Takeaki Tezuka   +3 more
doaj   +1 more source

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