Results 81 to 90 of about 16,346 (193)

Toxin–antitoxin systems and regulatory mechanisms in Mycobacterium tuberculosis [PDF]

Pathogens and Disease, 2018
There has been a significant reduction in annual tuberculosis incidence since the World Health Organization declared tuberculosis a global health threat. However, treatment of M. tuberculosis infections requires lengthy multidrug therapeutic regimens to achieve a durable cure.
Richard A, Slayden, Clinton C, Dawson, Jason E, Cummings   +2 more
openaire   +2 more sources

Genomic epidemiology and lineage‐specific risk stratification of tet(X4)‐mediated tigecycline resistance along the pork production chain: A One Health perspective

iMetaOmics, Volume 3, Issue 2, June 2026.
Genome surveillance across a swine‐associated One Health continuum in China shows that slaughterhouses act as major enrichment nodes for tet(X4)‐mediated tigecycline resistance, driven by putative clonal transmission and stable plasmid backbones. Integrating global datasets enables lineage‐specific risk stratification, highlighting key control points ...
Qin Wang, Qiwu Yuan, Xuan Chen, Yujing Zhong, Ke Wu, Renqiao Wen, Luya Liu, Xiaoqin Wang, Cui Li, Hongning Wang, Changwei Lei   +10 more
wiley   +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

Frontiers 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, Fernando Chimal-Cázares, Gabriela Hernández-Martínez, Gabriela Hernández-Martínez, Sabino Pacheco, Miguel A. Ares, Jorge Soria-Bustos, Jorge Soria-Bustos, Manuel Sánchez-Gutiérrez, Jeannett A. Izquierdo-Vega, Jose Antonio Ibarra, Jorge A. González-y-Merchand, Jean-Pierre Gorvel, Stéphane Méresse, Miguel A. De la Cruz   +14 more
doaj   +1 more source

Genome‐Wide In Silico Analysis of the Type VI Secretion System (T6SS) Within the Morganella Genus

MicrobiologyOpen, Volume 15, Issue 3, June 2026.
▪ Species‐specific T6SS patterns among Morganella genus (M. morganii and M. sibonii). ▪ Only one‐third of M. morganii isolates haboured a T6SS. ▪ All M. sibonii possess four T6SS clusters. ▪ M. sibonii exhibited a wide diversity of effectors compared to M. morganii.
Mathilde Duque, Aymeric Jacquemin, Delphine Girlich, Rémy A. Bonnin, Laurent Dortet   +4 more
wiley   +1 more source

Toxin-antitoxin systems and its biotechnological applications

, 2014
Toxin-antitoxin (TA) systems are important genetic modules composed by two elements: a toxin, that is always a protein, and an antitoxin, that can be a RNA or a protein and neutralizes the toxic effect of toxin.
Cangussu, Alex Sânder Rodrigues, Garrido, Saulo Santesso [UNESP], Marchetto, Reinaldo [UNESP], Garrido, Saulo Santesso, Barbosa, Luiz Carlos Bertucci, Marchetto, Reinaldo   +5 more
core   +1 more source

Artificial activation of toxin–antitoxin systems as an antibacterial strategy [PDF]

Trends in Microbiology, 2012
Toxin-antitoxin (TA) systems are unique modules that effect plasmid stabilization via post-segregational killing of the bacterial host. The genes encoding TA systems also exist on bacterial chromosomes, and it has been speculated that these are involved in a variety of cellular processes.
Julia J, Williams, Paul J, Hergenrother
openaire   +2 more sources

RHS-elements function as type II toxin-antitoxin modules that regulate intra-macrophage replication of Salmonella Typhimurium.

PLoS Genetics, 2020
RHS elements are components of conserved toxin-delivery systems, wide-spread within the bacterial kingdom and some of the most positively selected genes known. However, very little is known about how Rhs toxins affect bacterial biology.
Magnus Stårsta, Disa L Hammarlöf, Marcus Wäneskog, Susan Schlegel, Feifei Xu, Arvid Heden Gynnå, Malin Borg, Sten Herschend, Sanna Koskiniemi   +8 more
doaj   +1 more source

Emerging Dissemination of blaCTX‐M‐65 in Bovine E. coli in Spain Associated With IncHI2 Plasmids

MicrobiologyOpen, Volume 15, Issue 3, June 2026.
The resistome in ESBL/AmpC‐producing E. coli in livestock was diverse and dominated by plasmid‐borne genes Detection of host‐independent dissemination of AMR determinants mediated by shared plasmid types First report in Spanish cattle of blaCTX‐M‐65 on IncHI2 plasmids, an under‐reported ESBL in Europe Identification of potentially zoonotic clones in ...
Medelin Ocejo, Beatriz Oporto, Ana Hurtado   +2 more
wiley   +1 more source

Identification of the First Functional Toxin-Antitoxin System in Streptomyces

PLoS ONE, 2012
Toxin-antitoxin (TA) systems are widespread among the plasmids and genomes of bacteria and archaea. This work reports the first description of a functional TA system in Streptomyces that is identical in two species routinely used in the laboratory: Streptomyces lividans and S. coelicolor.
Sevillano, Laura, Díaz, Margarita, Yamaguchi, Y., Inouye, M., Santamaría, Ramón I.   +4 more
openaire   +5 more sources

The VapBC-4 Characterization Indicates It Is a Bona Fide Toxin-Antitoxin Module of Leptospira interrogans: Initial Evidence for a Role in Bacterial Adaptation

Microorganisms
Toxin-antitoxin (TA) systems are one of the bacterial adaptation mechanisms to adverse conditions. Leptospira interrogans serovar Copenhageni contains nine putative TA systems.
Bruna Oliveira Pigatto Azevedo, Deborah Kohn Damiano, Aline Florencio Teixeira, Ana Lucia Tabet Oller Nascimento, Luis Guilherme Virgilio Fernandes, Alexandre Paulo Yague Lopes   +5 more
doaj   +1 more source