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

    Specificity in endoplasmic reticulum-stress signaling in yeast entails a step-wise engagement of HAC1 mRNA to clusters of the stress sensor Ire1

    Eelco van Anken et al.
    Selective docking of HAC1 mRNA on Ire1 clusters at a site separate from the Ire1 RNase domain is key for endoplasmic reticulum stress signaling.
    1. Cell Biology

    Inadequate BiP availability defines endoplasmic reticulum stress

    Milena Vitale et al.
    The extent of (proteotoxic) endoplasmic reticulum stress, and the ensuing unfolded protein response activation, are commensurate with the extent of the chaperone BiP being sequestered by its client proteins.
    1. Cell Biology

    The unfolded protein response and endoplasmic reticulum protein targeting machineries converge on the stress sensor IRE1

    Diego Acosta-Alvear et al.
    The coordination of protein targeting to the endoplasmic reticulum and the unfolded protein response through the stress sensor IRE1 ensures quality control of the secreted and transmembrane proteomes.
    1. Cell Biology

    The proteasome biogenesis regulator Rpn4 cooperates with the unfolded protein response to promote ER stress resistance

    Rolf M Schmidt et al.
    Endoplasmic reticulum stress in yeast activates not only the UPR but also Rpn4, promoting the clearance of misfolded proteins from the cytosol as part of a modular cross-compartment stress response.
    1. Cell Biology

    Ceapins inhibit ATF6α signaling by selectively preventing transport of ATF6α to the Golgi apparatus during ER stress

    Ciara M Gallagher, Peter Walter
    Ceapins specifically inhibit ATF6α signaling by preventing its transport to the Golgi during endoplasmic reticulum stress.
    1. Cell Biology

    The Sec61 translocon limits IRE1α signaling during the unfolded protein response

    Arunkumar Sundaram et al.
    Building on previous work (Plumb et al., 2015), it is shown that the Sec61 translocon controls the oligomerization, activation and inactivation of Ire1α during endoplasmic reticulum stress.
    1. Cell Biology

    Nuclear receptor LRH-1/NR5A2 is required and targetable for liver endoplasmic reticulum stress resolution

    Jennifer L Mamrosh et al.
    LRH-1/NR5A2 responds to ER stress by inducing a novel pathway that is required for stress resolution in mice and can be targeted by LRH-1 agonists.
    1. Cell Biology
    2. Human Biology and Medicine

    Pharmacological inhibition of cystine–glutamate exchange induces endoplasmic reticulum stress and ferroptosis

    Scott J Dixon et al.
    Erastin and sorafenib inhibit system xc- and induce ER stress, suggesting these may be useful tools for probing the functions of system xc- and its role in inducing ER stress and ferroptosis.
    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.

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