1,322 results found
    1. Structural Biology and Molecular Biophysics

    Transcription initiation at a consensus bacterial promoter proceeds via a ‘bind-unwind-load-and-lock’ mechanism

    Abhishek Mazumder et al.
    Single-molecule fluorescence experiments reveal transcription initiation proceeds via a 'bind-unwind-load-and-lock' mechanism where promoter DNA unwinds outside the RNA polymerase (RNAP) cleft, the unwound template-DNA loads into the cleft, and RNAP 'locks' the template-DNA by closing the RNAP clamp module.
    1. Cell Biology
    2. Neuroscience

    HIF1α stabilization in hypoxia is not oxidant-initiated

    Amit Kumar et al.
    The current findings address the redox regulation of hypoxia inducible factor 1α (HIF1α) stability in hypoxia by showing that cytosolic, mitochondrial or lipid ROS are not necessary for HIF1α stabilization in hypoxia.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Retinoic acid signaling is directly activated in cardiomyocytes and protects mouse hearts from apoptosis after myocardial infarction

    Fabio Da Silva et al.
    Lineage tracing and genetic experiments resolve a long-standing controversy by showing that retinoic acid signaling is active in cardiomyocytes, both during development and after myocardial infarction, and protects damaged hearts from apoptosis.
    1. Medicine

    Modulation of fracture healing by the transient accumulation of senescent cells

    Dominik Saul et al.
    Senescent cells accumulate in the fracture callus and a reduction in the number of these cells accelerates fracture healing in mice.
    1. Cell Biology

    A PX-BAR protein Mvp1/SNX8 and a dynamin-like GTPase Vps1 drive endosomal recycling

    Sho W Suzuki et al.
    PX-BAR Mvp1 and dynamin-like GTPase Vps1 drive retromer-independent endosomal recycling.
    1. Neuroscience

    A projectome of the bumblebee central complex

    Marcel Ethan Sayre et al.
    Serial-section electron microscopy uncovers the intricate neural network of the bumblebee central complex, revealing highly conserved projection patterns as well as novel circuit elements potentially unique to bees.
    1. Ecology

    A beta-glucosidase of an insect herbivore determines both toxicity and deterrence of a dandelion defense metabolite

    Meret Huber et al.
    An insect digestive enzyme metabolizes a plant defense compound and thereby modulates herbivore performance and host plant choice, which in turn may alter plant defense evolution in nature.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An improved fluorescent noncanonical amino acid for measuring conformational distributions using time-resolved transition metal ion FRET

    William N Zagotta et al.
    Time-resolved transition metal ion fluorescence resonance energy transfer using a fluorescent, noncanonical amino acid donor and metal ion acceptor measures distances and distance distributions in proteins, allowing the equilibrium distributions among conformational states to be accurately determined.
    1. Epidemiology and Global Health

    Telomere length is associated with growth in children in rural Bangladesh

    Audrie Lin et al.
    In a rural, low-income setting in Bangladesh, early-life telomere length was associated with concurrent growth.
    1. Neuroscience

    Calcium dependence of neurotransmitter release at a high fidelity synapse

    Abdelmoneim Eshra et al.
    The Ca2+-dependence of vesicle priming, fusion, and replenishment at cerebellar mossy fiber boutons show a prominent Ca2+-dependent priming step, a shallow non-saturating dose-response curve up to 50 µM, and little Ca2+-dependence of sustained vesicle replenishment.

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