4,122 results found
    1. Microbiology and Infectious Disease

    Pathogen clonal expansion underlies multiorgan dissemination and organ-specific outcomes during murine systemic infection

    Karthik Hullahalli, Matthew K Waldor
    During Escherichia coli systemic infection, the replication of a minuscule fraction of the inoculum drives organ-specific clearance failures, systemic dissemination, and stochastic infection outcomes.
    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. Cell Biology

    Impaired mRNA splicing and proteostasis in preadipocytes in obesity-related metabolic disease

    Julia Sánchez-Ceinos et al.
    Alternative splicing and the endoplasmic reticulum (ER)-associated protein degradation (ERAD) system represent essential, fat depot-specific components of the adipogenesis that are altered in preadipocytes from obese individuals with metabolic disease.
    1. Neuroscience

    A state space modeling approach to real-time phase estimation

    Anirudh Wodeyar et al.
    A statistically principled approach developed to estimate phase of rhythmic signals in real-time shows robustness to multiple sources of error and also provides confidence criteria.
    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. Computational and Systems Biology
    2. Physics of Living Systems

    First-principles model of optimal translation factors stoichiometry

    Jean-Benoît Lalanne, Gene-Wei Li
    A parsimonious biophysical model correctly predicts the conserved expression stoichiometry of core bacterial mRNA translation factors, providing intuitive and quantitative design principles for in vivo pathway construction.
    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. Evolutionary Biology

    Decreased recent adaptation at human mendelian disease genes as a possible consequence of interference between advantageous and deleterious variants

    Chenlu Di et al.
    Harmful genetic variants at mendelian disease genes slow down adaptation, by interfering with the spread of adaptive variants in a population.

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