771 results found
    1. Evolutionary Biology

    Microbial eukaryotes have adapted to hypoxia by horizontal acquisitions of a gene involved in rhodoquinone biosynthesis

    Courtney W Stairs et al.
    A number of microbial eukaryotes have adapted to low oxygen conditions by acquiring a gene that allows their mitochondrial electron transport chain to continue to function when oxygen is scarce.
    1. Developmental Biology and Stem Cells

    Ripply2 recruits proteasome complex for Tbx6 degradation to define segment border during murine somitogenesis

    Wei Zhao et al.
    Inducing presomitic mesoderm (PSM)-fated ES cells clarified that Ripply2 directly interacts with Tbx6 and degrades Tbx6 in proteasome-ubiquitin pathway by recruiting the 26S proteasome, which is a PSM-specific event to define the segment border during mouse somitogenesis.
    1. Developmental Biology and Stem Cells

    Distinct myocardial lineages break atrial symmetry during cardiogenesis in zebrafish

    Almary Guerra et al.
    A discovery of two previously unknown, molecularly distinct fields of cardiac progenitors in zebrafish provides evidence for cardiac laterality prior to the emergence of cardiac septation and allows novel insights into cardiac development and disease.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteasome storage granules protect proteasomes from autophagic degradation upon carbon starvation

    Richard S Marshall, Richard D Vierstra
    Proteasomes are protected from autophagic elimination upon carbon starvation by sequestration into cytoplasmic storage granules, which aid cell fitness by providing a cache of proteasomes that can be rapidly remobilized when carbon availability improves.
    1. Structural Biology and Molecular Biophysics

    Microtubule assembly governed by tubulin allosteric gain in flexibility and lattice induced fit

    Maxim Igaev, Helmut Grubmüller
    A new combined mechanism explains how GTP binding by tubulin is linked to its dynamics and energetics in solution and why GTP-induced flexibility, and not the tubulin conformation as such, drives microtubule assembly.
    1. Immunology and Inflammation

    Histone Deacetylase 7 mediates tissue-specific autoimmunity via control of innate effector function in invariant Natural Killer T Cells

    Herbert G Kasler et al.
    The development of Natural Killer T Cells is controlled by Histone Deacetylase 7, a function that combined with its known role in thymic negative selection provides a potential mechanism explaining its association with tissue-specific autoimmunity in humans.
    1. Cell Biology

    Age-related islet inflammation marks the proliferative decline of pancreatic beta-cells in zebrafish

    Sharan Janjuha et al.
    During aging, the pancreatic endocrine islets undergo chronic inflammation, which is associated with a reduced capacity for self-renewal of the insulin-producing beta-cells in zebrafish.
    1. Cancer Biology
    2. Human Biology and Medicine

    MPDZ promotes DLL4-induced Notch signaling during angiogenesis

    Fabian Tetzlaff et al.
    The multiple PDZ domain protein recruits Notch ligands to Nectin-2, which increases Notch signaling activity during angiogenesis.
    1. Cancer Biology
    2. Cell Biology

    Lymphatic endothelium stimulates melanoma metastasis and invasion via MMP14-dependent Notch3 and β1-integrin activation

    Pirita Pekkonen et al.
    The melanoma cell interaction with lymphatic endothelial cells promotes melanoma metastasis by inducing a reversible switch to invasively sprouting melanoma cells.
    1. Cell Biology

    Mfn2 ubiquitination by PINK1/parkin gates the p97-dependent release of ER from mitochondria to drive mitophagy

    Gian-Luca McLelland et al.
    A crucial step during the mitophagy cascade involves the disassembly of connections between mitochondria and the endoplasmic reticulum via the retrotranslocation of Mfn2 tethering complexes by the Parkinson's disease genes PARKIN and PINK1, as well as the ATPase VCP/p97.

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