63 results found
    1. Cell Biology

    The sterol-responsive RNF145 E3 ubiquitin ligase mediates the degradation of HMG-CoA reductase together with gp78 and Hrd1

    Sam A Menzies et al.
    CRISPR/Cas9 genome-wide screens using sterol-sensitive endogenous HMG-CoA reductase (HMGCR) reporter identify the sterol-responsive RNF145 and gp78 as independently responsible for sterol-accelerated degradation of HMGCR, the rate-limiting enzyme of cholesterol biosynthesis.
    1. Cell Biology

    USP13 antagonizes gp78 to maintain functionality of a chaperone in ER-associated degradation

    Yanfen Liu et al.
    A deubiquitinase antagonizes the activity of an associated E3 ligase to prevent uncontrolled ubiquitination of a degradation machinery protein and thus maintain its functionality in protein quality control at the endoplasmic reticulum.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Calcium depletion challenges endoplasmic reticulum proteostasis by destabilising BiP-substrate complexes

    Steffen Preissler et al.
    Regulation of the endoplasmic reticulum chaperone BiP by calcium.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    AMPylation targets the rate-limiting step of BiP’s ATPase cycle for its functional inactivation

    Steffen Preissler et al.
    AMPylation of BiP allosterically interferes with stimulation of its ATPase activity by J-proteins that is required for high affinity substrate binding.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sterol homeostasis requires regulated degradation of squalene monooxygenase by the ubiquitin ligase Doa10/Teb4

    Ombretta Foresti et al.
    Parallel branches of the ERAD pathway regulate sterol synthesis at multiple steps via feedback inhibition.
    1. Neuroscience

    The critical role of membralin in postnatal motor neuron survival and disease

    Bo Yang et al.
    Membralin mutant mice manifest a severe and early-onset motor neuron disease with defects in endoplasmic reticulum-associated protein degradation.
    1. Cell Biology
    2. Developmental Biology

    Regulation of BMP4/Dpp retrotranslocation and signaling by deglycosylation

    Antonio Galeone et al.
    The cytoplasmic enzyme N-glycanase 1 plays an evolutionary conserved role in promoting the ERAD-mediated retrotranslocation of misfolded Dpp/BMP4 from the ER, thereby allowing BMP signaling in specific contexts.
    1. Stem Cells and Regenerative Medicine

    Stem cell transplantation rescued a primary open-angle glaucoma mouse model

    Siqi Xiong et al.
    Stem cell transplantation reduces intraocular pressure and preserves retinal ganglion cell function in a mouse glaucoma model, which could lead to a novel therapy for glaucoma to preserve vision.
    1. Cell Biology

    ACE2: Evidence of role as entry receptor for SARS-CoV-2 and implications in comorbidities

    Natalia Zamorano Cuervo, Nathalie Grandvaux
    Despite evidence that ACE2 is the receptor for SARS-CoV-2, its limited expression in the respiratory system challenges the uniqueness of this entry route and role in the multifaceted COVID-19.
    1. Cell Biology
    2. Neuroscience

    The unfolded protein response is required for dendrite morphogenesis

    Xing Wei et al.
    The unfolded protein response regulates neuronal dendrite morphogenesis by controlling the folding of a transmembrane leucine-rich repeat (LRR) protein.

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