446 results found
    1. Neuroscience

    MCTP is an ER-resident calcium sensor that stabilizes synaptic transmission and homeostatic plasticity

    Özgür Genç et al.
    MCTP is a novel presynaptic calcium sensor, resident within the endoplasmic reticulum, that is required for normal baseline neurotransmission, short-term synaptic plasticity and presynaptic homeostatic plasticity.
    1. Cell Biology

    Ratiometric sensing of BiP-client versus BiP levels by the unfolded protein response determines its signaling amplitude

    Anush Bakunts et al.
    Restoration of endoplasmic reticulum (ER) homeostatis occurs when levels of the key ER resident chaperone BiP exceed those of accumulating ER clients.
    1. Cell Biology

    The unfolded protein response in fission yeast modulates stability of select mRNAs to maintain protein homeostasis

    Philipp Kimmig et al.
    A unique form of regulation has been observed in the unfolded protein response of S. pombe, along with a novel mechanism of post-transcriptional mRNA processing.
    1. Cell Biology
    2. Plant Biology

    A cross-kingdom conserved ER-phagy receptor maintains endoplasmic reticulum homeostasis during stress

    Madlen Stephani et al.
    C53 bridges selective autophagy with ribosome-associated quality control at the endoplasmic reticulum.
    1. Cell Biology

    Selective clearance of the inner nuclear membrane protein emerin by vesicular transport during ER stress

    Abigail Buchwalter et al.
    Emerin, a protein that plays key roles in nuclear organization, can be dynamically degraded in response to environmental stimuli such as ER stress.
    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

    PDIA1/P4HB is required for efficient proinsulin maturation and ß cell health in response to diet induced obesity

    Insook Jang et al.
    The major protein disulfide isomerase family member, PDIA1, is essential in beta cells of mice fed a high-fat diet to maintain glucose homeostasis, proinsulin maturation and organelle integrity.
    1. Cell Biology

    Intact protein folding in the glutathione-depleted endoplasmic reticulum implicates alternative protein thiol reductants

    Satoshi Tsunoda et al.
    Adapting a cytosolic enzyme that breaks down glutathione to function in the lumen of the endoplasmic reticulum challenges the long-held view that reduced glutathione fuels disulfide rearrangements during protein folding.
    1. Cell Biology
    2. Plant Biology

    Reticulon proteins modulate autophagy of the endoplasmic reticulum in maize endosperm

    Xiaoguo Zhang et al.
    Plant reticulons bind Atg8 under ER stress to promote reticulophagy and ameliorate ER stress in the maize endosperm.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Movement of accessible plasma membrane cholesterol by the GRAMD1 lipid transfer protein complex

    Tomoki Naito et al.
    GRAMD1 proteins sense a transient expansion of the accessible pool of plasma membrane cholesterol and facilitate its transport to the endoplasmic reticulum at ER-PM contact sites.

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