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

    Phospholipase D activity couples plasma membrane endocytosis with retromer dependent recycling

    Rajan Thakur et al.
    Phosphatidic acid regulates recycling of endocytosed plasma membrane vesicles in polarized cells through a retromer and Arf1 dependent process.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    PIP2 depletion promotes TRPV4 channel activity in mouse brain capillary endothelial cells

    Osama F Harraz et al.
    TRPV4 channels in brain capillaries are suppressed by the phosphoinositide PIP2 and activated by receptor agonists implicated in neurovascular coupling.
    1. Cancer Biology
    2. Human Biology and Medicine

    BRAFV600E cooperates with CDX2 inactivation to promote serrated colorectal tumorigenesis

    Naoya Sakamoto et al.
    Genetic analyses reveal how CDX2 and BRAF defects seen in serrated colorectal cancer (CRCs), a poor prognosis CRC subset, cooperate in tumorigenesis in humans and in a mouse cancer model.
    1. Chromosomes and Gene Expression
    2. Human Biology and Medicine

    A deleterious gene-by-environment interaction imposed by calcium channel blockers in Marfan syndrome

    Jefferson J Doyle et al.
    Calcium channel blockers accelerate aortic aneurysm and cause premature aortic rupture in a mouse model of Marfan syndrome through protein kinase C-mediated activation of extracellular signal-regulated kinase.
    1. Cell Biology
    2. Immunology and Inflammation

    Non-canonical antagonism of PI3K by the kinase Itpkb delays thymocyte β-selection and renders it Notch-dependent

    Luise Westernberg et al.
    Antagonistic signaling by the kinases PI3K and Itpkb limits the kinetics and enforces the Notch-dependence of beta-selection – the most important cell-fate determining process in alpha beta T cell development.
    1. Structural Biology and Molecular Biophysics

    Atomic structure of the 26S proteasome lid reveals the mechanism of deubiquitinase inhibition

    Corey M Dambacher et al.
    Within the isolated lid sub-complex of the proteasome, a finely tuned network of interactions maintains the deubiquitinase in an inhibited conformation; dramatic rearrangements of the lid subunits upon incorporation into the holoenzyme lead to the deubiquitinase’s activation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The ER–Golgi intermediate compartment is a key membrane source for the LC3 lipidation step of autophagosome biogenesis

    Liang Ge et al.
    A cell-free biochemical assay for protein lipidation identifies the ER–Golgi intermediate compartment as a key early station in the formation of an autophagosome.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    SEC24A deficiency lowers plasma cholesterol through reduced PCSK9 secretion

    Xiao-Wei Chen et al.
    COPII vesicles regulate the metabolism of cholesterol through the selective transport of secretory proteins.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Fcp1 phosphatase controls Greatwall kinase to promote PP2A-B55 activation and mitotic progression

    Rosa Della Monica et al.
    The phosphatase Fcp1 inactivates Greatwall kinase at the end of mitosis.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Pharmacological dimerization and activation of the exchange factor eIF2B antagonizes the integrated stress response

    Carmela Sidrauski et al.
    A drug-like molecule called ISRIB, which activates the translation initiation factor eIF2B, antagonizes stress responses as diverse as protein misfolding and nutrient deprivation, and restores protein synthesis, enhancing memory.

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