Results 71 to 80 of about 295,113 (307)

Molecular Characterization of Protease Activity in Serratia sp. Strain SCBI and Its Importance in Cytotoxicity and Virulence [PDF]

open access: yes, 2014
A newly recognized Serratia species, termed South African Caenorhabditis briggsae isolate (SCBI), is both a mutualist of the nematode Caenorhabditis briggsae KT0001 and a pathogen of lepidopteran insects. Serratia sp.
Petersen, Lauren M., Tisa, Louis S.
core   +2 more sources

sRNA Antitoxins: More than One Way to Repress a Toxin

open access: yesToxins, 2014
Bacterial toxin-antitoxin loci consist of two genes: one encodes a potentially toxic protein, and the second, an antitoxin to repress its function or expression. The antitoxin can either be an RNA or a protein.
Jia Wen, Elizabeth M. Fozo
doaj   +1 more source

A toxin-deformation dependent inhibition mechanism in the T7SS toxin-antitoxin system of Gram-positive bacteria

open access: yesNature Communications, 2022
Antimicrobial toxins are secreted by bacteria to kill rival species. Here the authors report the mechanism of inhibition of EsaD, a toxin secreted by some S.
Yongjin Wang   +17 more
doaj   +1 more source

Shaping Pulses to Control Bistable Monotone Systems Using Koopman Operator [PDF]

open access: yes, 2016
In this paper, we further develop a recently proposed control method to switch a bistable system between its steady states using temporal pulses. The motivation for using pulses comes from biomedical and biological applications (e.g.
Goncalves, Jorge   +2 more
core   +2 more sources

Toxin–antitoxin systems [PDF]

open access: yesMobile Genetic Elements, 2013
Toxin-antitoxin (TA) systems are small genetic elements composed of a toxin gene and its cognate antitoxin. The toxins of all known TA systems are proteins while the antitoxins are either proteins or non-coding RNAs. Based on the molecular nature of the antitoxin and its mode of interaction with the toxin the TA modules are currently grouped into five ...
Brigitte Poppenberger   +2 more
openaire   +3 more sources

Identification of a VapBC toxin–antitoxin system in a thermophilic bacterium Thermus thermophilus HB27 [PDF]

open access: yes, 2017
There are 12 putative toxin–antitoxin (TA) loci in the Thermus thermophilus HB27 genome, including four VapBC and three HicBA families. Expression of these seven putative toxin genes in Escherichia coli demonstrated that one putative VapC toxin TTC0125 ...
Fan Yuqi   +4 more
core   +2 more sources

TOXIN-ANTITOXIN IMMUNIZATION AGAINST DIPHTHERIA [PDF]

open access: yesJAMA: The Journal of the American Medical Association, 1922
The development of antitoxin in the bodies of animals injected with diphtheria toxin is one of the best established of facts. Since von Behring and Roux announced the results of their investigations, large numbers of horses have been injected with toxin and have developed abundant antitoxin.
openaire   +2 more sources

Structural insights into chaperone addiction of toxin-antitoxin systems

open access: yesNature Communications, 2019
SecB homologs can be associated with stress-responsive type II toxin–antitoxin (TA) systems and form tripartite toxin-antitoxin-chaperone systems (TAC).
Valérie Guillet   +12 more
doaj   +1 more source

A MXene‐Based Nanothermal Knife Inhibits Aggresome‐Mediated Persister Formation for Preventing Dental Caries

open access: yesAdvanced Science, EarlyView.
Early childhood caries (ECC) involves cariogenic persisters that evade antimicrobial treatment. Persisters achieve this by downregulating heat shock proteins (HSPs) and formation of protein aggregates. Ti3C2 MXene‐based photothermal therapy (PTT) acts as a “nanothermal knife,” disrupting membranes, upregulating HSPs, inhibits aggregates, prevents ...
Yinyin Zhang   +8 more
wiley   +1 more source

Toxin-Antitoxin Systems and Persistence

open access: yes, 2019
Toxin-antitoxin (TA) systems are small genetic modules comprising a stable toxic protein and an antitoxin preventing the toxin activity. In type II TA systems, antitoxins are unstable proteins that are degraded by host ATP-dependent proteases. In steady-state conditions, the antitoxin forms a complex with the toxin in which the toxic activity is ...
Fraikin, Nathan   +2 more
openaire   +3 more sources

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