1,226 results found
    1. Ecology
    2. Microbiology and Infectious Disease

    Light-dependent single-cell heterogeneity in the chloroplast redox state regulates cell fate in a marine diatom

    Avia Mizrachi et al.
    Single-cell analysis of the chloroplast redox response to high light and oxidative stress revealed light-dependent heterogeneity, and was linked to cell fate determination within isogenic diatom populations.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Redox signaling via the molecular chaperone BiP protects cells against endoplasmic reticulum-derived oxidative stress

    Jie Wang et al.
    Direct modification by endogenous peroxide of a conserved cysteine in the molecular chaperone BiP decouples its ATPase and peptide-binding activities, allowing for enhanced polypeptide holdase activity during oxidative stress.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    C-mannosylation supports folding and enhances stability of thrombospondin repeats

    Aleksandra Shcherbakova et al.
    C-mannosylation supports native folding of thrombospondin type 1 repeats in the endoplasmic reticulum and stabilizes the folded proteins by modulating the dynamics of the tryptophan-arginine ladder.
    1. Chromosomes and Gene Expression

    Dynamic repression by BCL6 controls the genome-wide liver response to fasting and steatosis

    Meredith A Sommars et al.
    B cell lymphoma 6 (BCL6) represses fasting gene expression by opposing peroxisome proliferator-activated receptor alpha (PPARa) activity at enhancers, and its ablation protects against steatosis by enhancing fatty acid catabolism.
    1. Biochemistry and Chemical Biology

    Mia40 is a trans-site receptor that drives protein import into the mitochondrial intermembrane space by hydrophobic substrate binding

    Valentina Peleh et al.
    The import of proteins into the intermembrane space of mitochondria is driven by binding to the trans-site receptor Mia40 and not by the oxidation of cysteine residues.
    1. Chromosomes and Gene Expression

    Maturation of selected human mitochondrial tRNAs requires deadenylation

    Sarah F Pearce et al.
    Removal of spurious poly(A) tails by the PDE12 exoribonuclease is required to maintain the integrity of human mitochondrial tRNAs and rRNAs and their availability for efficient mitochondrial translation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    An unexpected role for the yeast nucleotide exchange factor Sil1 as a reductant acting on the molecular chaperone BiP

    Kevin D Siegenthaler et al.
    Building on previous work (Wang et al., 2014), it is shown that the nucleotide exchange factor of the chaperone BiP (Sil1) unexpectedly facilitates the reduction of oxidized BiP.
    1. Computational and Systems Biology
    2. Neuroscience

    Mouse brain transcriptome responses to inhaled nanoparticulate matter differed by sex and APOE in Nrf2-Nfkb interactions

    Amin Haghani et al.
    Transcriptome analysis of mouse brain revealed that the APOE4 allele and sex can alter air pollution neurotoxicity in adults.
    1. Developmental Biology

    Fatty acid β-oxidation is required for the differentiation of larval hematopoietic progenitors in Drosophila

    Satish Kumar Tiwari et al.
    Genetic and molecular analyses reveal the decisive role of fatty acid oxidation (FAO) acting downstream to the ROS-JNK circuit essential for hemocyte progenitor differentiation in Drosophila..
    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.

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