Results 61 to 70 of about 295,113 (307)

Variation at the capsule locus, cps, of mistyped and non-typable Streptococcus pneumoniae isolates [PDF]

open access: yes, 2012
The capsule polysaccharide locus (cps) is the site of the capsule biosynthesis gene cluster in encapsulated Streptococcus pneumoniae. A set of pneumococcal samples and non-pneumococcal streptococci from Denmark, the Gambia, the Netherlands, Thailand, the
Antonio, M   +10 more
core   +1 more source

The Bacillus cereus spoIIS programmed cell death system

open access: yesFrontiers in Microbiology, 2015
Programmed cell death in bacteria is generally associated with two¬ component toxin antitoxin systems. The SpoIIS toxin-antitoxin system, consisting of a membrane bound SpoIISA toxin and a small, cytosolic antitoxin SpoIISB, was originally identified in ...
Jana eMelnicakova   +3 more
doaj   +1 more source

Molecular Characterization of SehB, a Type II Antitoxin of Salmonella enterica Serotype Typhimurium: Amino Acid Residues Involved in DNA-Binding, Homodimerization, Toxin Interaction, and Virulence

open access: yesFrontiers in Microbiology, 2020
Salmonella enterica serotype Typhimurium is a bacterium that causes gastroenteritis and diarrhea in humans. The genome of S. Typhimurium codes for diverse virulence factors, among which are the toxin-antitoxin (TA) systems.
Fernando Chimal-Cázares   +14 more
doaj   +1 more source

Characterization of a toxin-antitoxin system in Mycobacterium tuberculosis suggests neutralization by phosphorylation as the antitoxicity mechanism

open access: yesCommunications Biology, 2020
Mycobacterium tuberculosis (Mtb) encodes an exceptionally large number of toxin-antitoxin (TA) systems, supporting the hypothesis that TA systems are involved in pathogenesis.
Xia Yu   +10 more
semanticscholar   +1 more source

Geometric Properties of Isostables and Basins of Attraction of Monotone Systems [PDF]

open access: yes, 2017
In this paper, we study geometric properties of basins of attraction of monotone systems. Our results are based on a combination of monotone systems theory and spectral operator theory.
Mauroy, Alexandre, Sootla, Aivar
core   +3 more sources

Type II toxin–antitoxin system in bacteria: activation, function, and mode of action

open access: yesBiophysics Reports, 2020
The toxin–antitoxin (TA) system is composed of a stable toxin and an unstable antitoxin that neutralizes the toxin. Being perhaps the most studied among the different TA types, type II TA systems are widely distributed and often exist in multiple copies ...
Siping Zhang   +8 more
semanticscholar   +1 more source

Phage ϕC2 mediates transduction of Tn6215, encoding erythromycin resistance, between Clostridium difficile strains [PDF]

open access: yes, 2013
UNLABELLED: In this work, we show that Clostridium difficile phage ϕC2 transduces erm(B), which confers erythromycin resistance, from a donor to a recipient strain at a frequency of 10(-6) per PFU.
Chang, Barbara J   +5 more
core   +3 more sources

Expression, Purification, and Functional Analysis of Novel RelE Operon from X. nematophila

open access: yesThe Scientific World Journal, 2014
Bacterial toxin-antitoxin (TA) complexes induce programmed cell death and also function to relieve cell from stress by various response mechanisms. Escherichia coli RelB-RelE TA complex consists of a RelE toxin functionally counteracted by RelB antitoxin.
Jitendra Singh Rathore   +1 more
doaj   +1 more source

Diverse LXG toxin and antitoxin systems specifically mediate intraspecies competition in Bacillus subtilis biofilms.

open access: yesPLoS Genetics, 2021
Biofilms are multispecies communities, in which bacteria constantly compete with one another for resources and niches. Bacteria produce many antibiotics and toxins for competition.
Kazuo Kobayashi
doaj   +1 more source

The Haemophilus influenzae HipBA toxin–antitoxin system adopts an unusual three-component regulatory mechanism

open access: yesIUCrJ, 2022
Type II toxin–antitoxin (TA) systems encode two proteins: a toxin that inhibits cell growth and an antitoxin that neutralizes the toxin by direct intermolecular protein–protein interactions.
Ji Sung Koo   +4 more
doaj   +1 more source

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