158 results found
    1. Cell Biology

    Mitochondrial CoQ deficiency is a common driver of mitochondrial oxidants and insulin resistance

    Daniel J Fazakerley et al.
    Lower mitochondrial coenzyme Q was a consistent feature across multiple in vitro and in vivo models of insulin resistance and was sufficient to cause insulin resistance through increased mitochondrial oxidants.
    1. Microbiology and Infectious Disease

    An orphan cbb3-type cytochrome oxidase subunit supports Pseudomonas aeruginosa biofilm growth and virulence

    Jeanyoung Jo et al.
    During growth in biofilms and host infection, the opportunistic pathogen Pseudomonas aeruginosa employs respiratory heterocomplexes that support extracellular electron shuttling and pathogenicity.
    1. Neuroscience

    Early dysfunction and progressive degeneration of the subthalamic nucleus in mouse models of Huntington's disease

    Jeremy F Atherton et al.
    In mouse models of Huntington's disease, the subthalamic nucleus, which suppresses movements, also exhibits impaired glutamate homeostasis, NMDA receptor-dependent mitochondrial oxidant stress, firing disruption, and 30% neuronal loss.
    1. Cell Biology
    2. Immunology and Inflammation

    Anti-ferroptotic mechanism of IL4i1-mediated amino acid metabolism

    Leonie Zeitler et al.
    IL4i1 is an amino acid oxidase expressed in the mammalian immune system and snake venoms, which control diametrically opposite cell protection versus cell death pathways, respectively.
    1. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    N-chlorination mediates protective and immunomodulatory effects of oxidized human plasma proteins

    Agnes Ulfig et al.
    N-chlorination, a reversible, oxidative modification, turns plasma proteins into holdase-like chaperones, potent activators of immune cells and pro-survival factors for phagocytic immune 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. Cell Biology

    Tryparedoxin peroxidase-deficiency commits trypanosomes to ferroptosis-type cell death

    Marta Bogacz, R Luise Krauth-Siegel
    Ferroptosis is an evolutionary ancient process that is counterbalanced by distant peroxidases, GPx4 in mammals and tryparedoxin peroxidases in trypanosomes, and can be induced at distinct subcellular membranes depending on the individual cell type.
    1. Biochemistry and Chemical Biology
    2. Ecology

    The energy savings-oxidative cost trade-off for migratory birds during endurance flight

    Scott McWilliams et al.
    Migratory birds with fuel stores composed of more omega-6 fats saved energy during long-duration flights, but this short-term energy saving came at the long-term cost of higher oxidative damage.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    A self-balancing circuit centered on MoOsm1 kinase governs adaptive responses to host-derived ROS in Magnaporthe oryzae

    Xinyu Liu et al.
    A phosphorylation circuitry balancing among kinase, transcription factor, transcription repressor, and phosphatase in response against host immunity during M. oryzae–rice interaction.
    1. Ecology
    2. Evolutionary Biology

    Proteomics reveals synergy between biomass degrading enzymes and inorganic Fenton chemistry in leaf-cutting ant colonies

    Morten Schiøtt, Jacobus J Boomsma
    Leaf-cutting ants use their fecal fluid to vector enzymes produced by their fungal symbiont to degrade plant biomass with a combination of degradation enzymes and Fenton chemistry.

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