329 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Temporal profiling of redox-dependent heterogeneity in single cells

    Meytal Radzinski et al.
    Analysis of aging yeast cells using the in-vivo roGFP2-based probe reveals redox-dependent heterogeneity, reflected in a bi-modal distribution of the oxidation status, differential growth and replication, as well as distinct proteomic and transcriptomic profiles.
    1. Microbiology and Infectious Disease

    Efficacy of β-lactam/β-lactamase inhibitor combination is linked to WhiB4-mediated changes in redox physiology of Mycobacterium tuberculosis

    Saurabh Mishra et al.
    Intrinsic tolerance of Mycobacterium tuberculosis toward the world's most successful antibacterials, β-lactams, is dependent on cytoplasmic redox potential and an intracellular redox-sensor WhiB4.
    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. Developmental Biology

    A vitamin-B2-sensing mechanism that regulates gut protease activity to impact animal’s food behavior and growth

    Bin Qi et al.
    The availability of an essential dietary micronutrient is evaluated by an intestinal signaling system that in turn regulates food-uptake and response behaviors by modulating protease expression.
    1. Plant Biology

    A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination

    Wannarat Pornsiriwong et al.
    Molecular signals from chloroplasts can synergistically interact with the plant hormone, abscisic acid (ABA), to regulate non-canonical signaling pathways mediating fundamental cellular processes including stomatal closure, seed dormancy and germination.
    1. Evolutionary Biology

    The last common ancestor of animals lacked the HIF pathway and respired in low-oxygen environments

    Daniel B Mills et al.
    Sponges and ctenophores lack hypoxia-inducible factors, suggesting that the metazoan last common ancestor could have lived aerobically under severe hypoxia and did not need to regulate its transcription in response to oxygen availability.
    1. Developmental Biology
    2. Microbiology and Infectious Disease

    Bacterial colonization stimulates a complex physiological response in the immature human intestinal epithelium

    David R Hill et al.
    Contact with bacteria and subsequent hypoxia promotes functional maturation of the immature gastrointestinal tract.
    1. Structural Biology and Molecular Biophysics
    2. Human Biology and Medicine

    The angiopoietin-like protein ANGPTL4 catalyzes unfolding of the hydrolase domain in lipoprotein lipase and the endothelial membrane protein GPIHBP1 counteracts this unfolding

    Simon Mysling et al.
    Building on previous work (Mysling et al., 2016), it is shown that angiopoietin-like protein 4 (ANGPTL4) inhibits lipoprotein lipase activity by catalyzing the unfolding of its hydrolase domain.
    1. Biochemistry and Chemical Biology
    2. Physics of Living Systems

    Optical estimation of absolute membrane potential using fluorescence lifetime imaging

    Julia R Lazzari-Dean et al.
    Fluorescence lifetime imaging microscopy, paired with fluorescent, voltage-sensitive dyes, provides a method for measuring and quantifying membrane potentials of living cells.
    1. Microbiology and Infectious Disease

    A single regulator NrtR controls bacterial NAD+ homeostasis via its acetylation

    Rongsui Gao et al.
    Functional definition of NrtR and the discovery of its acetylation represents a first paradigm for linking protein acetylation to bacterial central NAD+ metabolism.

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