2,815 results found
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Multicolor fluorescence fluctuation spectroscopy in living cells via spectral detection

    Valentin Dunsing et al.
    Fluorescence fluctuation spectroscopy is implemented for detection of up to four molecular species, allowing users to quantify molecular interactions and stoichiometry of multicomponent complexes in live cells, in a wide range of biological processes, from membrane signaling to viral assembly.
    1. Microbiology and Infectious Disease

    Effect of SARS-CoV-2 proteins on vascular permeability

    Rossana Rauti et al.
    A specific SARS-CoV-2 proteins that affect the vascular permeability and impairs the functionality of other significant organs has been identified.
    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. Neuroscience

    Experience-dependent weakening of callosal synaptic connections in the absence of postsynaptic FMRP

    Zhe Zhang et al.
    Postnatal, postsynaptic loss of FMRP specifically weakens callosal synaptic inputs onto L2/3 pyramidal neurons, in requirement ofnormal sensory experience, through downregulating AMPA receptor transmission and without affecting local synaptic inputs during cortical circuit development.
    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

    Metformin alleviates stress-induced cellular senescence of aging human adipose stromal cells and the ensuing adipocyte dysfunction

    Laura Le Pelletier et al.
    Aging is associated with stress-induced senescence of adipose stromal cells, leading to impaired adipogenesis, oxidative stress, mitochondrial dysfunction, and insulin resistance, all being alleviated by metformin treatment of adipose stromal cells.
    1. Cell Biology
    2. Developmental Biology

    Myogenin controls via AKAP6 non-centrosomal microtubule-organizing center formation at the nuclear envelope

    Robert Becker et al.
    Myogenin promotes centrosome attenuation and establishes the nuclear envelope as the dominant microtubule organization center via the scaffold protein AKAP6, which is required for the recruitment of centrosomal proteins.

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