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

    Peroxiredoxin promotes longevity and H2O2-resistance in yeast through redox-modulation of protein kinase A

    Friederike Roger, Cecilia Picazo ... Mikael Molin
    The major cytosolic yeast peroxiredoxin Tsa1 controls aging and H2O2-resistance by inhibiting protein kinase A through a conserved cysteine in the catalytic subunit activation loop and not by scavenging H2O2.
    1. Medicine

    Late-life restoration of mitochondrial function reverses cardiac dysfunction in old mice

    Ying Ann Chiao, Huiliang Zhang ... Peter Rabinovitch
    Mitochondrial-targeted SS-31 peptide ameliorates mitochondrial dysfunction and rescues pre-existing cardiac dysfunction in old mice, supporting the translational potential of mitochondrial protective interventions to treat age-related diseases.
    1. Biochemistry and Chemical Biology

    Hepatic AMPK signaling dynamic activation in response to REDOX balance are sentinel biomarkers of exercise and antioxidant intervention to improve blood glucose control

    Meiling Wu, Anda Zhao ... Dongyun Shi
    Moderate exercise upregulated compensatory antioxidant capability and reached a high-level redox balance, whereas antioxidant intervention achieved a low-level redox balance by inhibiting oxidative stress for treating diabetes.
    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, Kristeen A Pareja ... Carolyn S Sevier
    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. Immunology and Inflammation

    Redox regulation of PTPN22 affects the severity of T-cell-dependent autoimmune inflammation

    Jaime James, Yifei Chen ... Rikard Holmdahl
    PTPN22 function is regulated by reactive oxygen species, and redox regulation of PTPN22 impacts T-cell-dependent autoimmune inflammation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Quantitative H2S-mediated protein sulfhydration reveals metabolic reprogramming during the integrated stress response

    Xing-Huang Gao, Dawid Krokowski ... Maria Hatzoglou
    ATF4, the master regulator of transcription during the Integrated Stress Response (ISR), causes global changes in cysteine sulfhydration of proteins and this event causes cellular metabolic reprogramming.
    1. Cell Biology

    Profound regulation of Na/K pump activity by transient elevations of cytoplasmic calcium in murine cardiac myocytes

    Fang-Min Lu, Christine Deisl, Donald W Hilgemann
    Transient Ca elevations of cytoplasmic calcium in cardiac myocytes profoundly activate cardiac Na/K pump activity in parallel with physical-chemical changes of the sarcolemma but without involvement of conventional signaling mechanisms.
    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, Kristeen A Pareja ... Carolyn S Sevier
    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. Structural Biology and Molecular Biophysics

    Molecular mechanism of thermosensory function of human heat shock transcription factor Hsf1

    Nikolai Hentze, Laura Le Breton ... Matthias P Mayer
    Heat-induced local unfolding allows Hsf1 to form trimers and bind to DNA, which depends on Hsf1 concentration and is promoted, not inhibited, by Hsp90.
    1. Immunology and Inflammation

    Itaconate stabilizes CPT1a to enhance lipid utilization during inflammation

    Rabina Mainali, Nancy Buechler ... Matthew A Quinn
    Proteomic-based discovery of a novel mechanism of action affording anti-steatotic properties of itaconate through stabilization of fatty acid oxidation enzyme protein abundance.

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