834 results found
    1. Microbiology and Infectious Disease

    A broadly distributed toxin family mediates contact-dependent antagonism between gram-positive bacteria

    John C Whitney et al.
    Diverse LXG toxins delivered by the Esx pathway function as mediators of contact-dependent interbacterial antagonism within and between Gram-positive bacterial species.
    1. Structural Biology and Molecular Biophysics

    Stepwise visualization of membrane pore formation by suilysin, a bacterial cholesterol-dependent cytolysin

    Carl Leung et al.
    Electron and atomic force microscopy show how bacterial toxins bind to a host membrane and assemble into arcs and rings, before undergoing a dramatic, concerted conformational change to insert into the membrane.
    1. Microbiology and Infectious Disease

    Discovery and characterization of a prevalent human gut bacterial enzyme sufficient for the inactivation of a family of plant toxins

    Nitzan Koppel et al.
    A unique, widely distributed gut bacterial enzyme selectively metabolizes plant-derived cardiac glycoside drugs.
    1. Biochemistry and Chemical Biology

    Variability of cholesterol accessibility in human red blood cells measured using a bacterial cholesterol-binding toxin

    Rima S Chakrabarti et al.
    Accessible cholesterol levels in human red blood cells were found to be stable within individuals but vary >10-fold among individuals and this variability may contribute to differences in cholesterol trafficking among tissues.
    1. Microbiology and Infectious Disease

    Resilience of small intestinal beneficial bacteria to the toxicity of soybean oil fatty acids

    Sara C Di Rienzi et al.
    Comparisons between lactobacilli bacteria in the small intestine and those evolved in the lab reveal several modes of resistance to toxic fatty acids.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Abundant toxin-related genes in the genomes of beneficial symbionts from deep-sea hydrothermal vent mussels

    Lizbeth Sayavedra et al.
    Beneficial symbiotic bacteria encode an exceptional number of toxin-related genes that are all expressed by the symbionts in the host, supporting their key role in host-microbe interactions.
    1. Neuroscience

    Gustatory-mediated avoidance of bacterial lipopolysaccharides via TRPA1 activation in Drosophila

    Alessia Soldano et al.
    Fruit flies can taste and avoid food contaminated with a bacterial toxin using the same channel protein that functions in humans as sensor of noxious chemical stimuli.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    The Photorhabdus asymbiotica virulence cassettes deliver protein effectors directly into target eukaryotic cells

    Isabella Vlisidou et al.
    The insect pathogenic bacterium Photorhabdus has evolved astonishing nano-scale analogues of hypodermic syringes that it uses to inject toxins into host cells.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Neutrophil-generated HOCl leads to non-specific thiol oxidation in phagocytized bacteria

    Adriana Degrossoli et al.
    The use of genetically encoded redox sensors in phagocytized bacteria reveals that, among the toxic cocktail of oxidants released into the neutrophil's phagolysosome, HOCl is the main component responsible for the oxidative modification of bacterial protein thiols.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A genetic selection reveals functional metastable structures embedded in a toxin-encoding mRNA

    Sara Masachis et al.
    A genetic selection of toxicity suppressors coupled to high-throughput sequencing has captured metastable RNA structures that co-transcriptionally inhibit the translation of a bacterial toxin.

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