6,939 results found
    1. Evolutionary Biology

    Binding affinity landscapes constrain the evolution of broadly neutralizing anti-influenza antibodies

    Angela M Phillips et al.
    CR9114, one of the most broadly neutralizing anti-influenza antibodies characterized to date, acquires affinity to divergent HA subtypes sequentially, due to higher order interactions between the nested sets of mutations required for binding each distinct subtype.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Inducible and reversible inhibition of miRNA-mediated gene repression in vivo

    Gaspare La Rocca et al.
    A new genetically engineered mouse strain is described in which miRNA activity can be acutely and reversibly inhibited, showing that in a subset of adult tissues miRNA activity is dispensable under homeostatic conditions but becomes essential during tissue regeneration.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Single-molecule imaging reveals the concerted release of myosin from regulated thin filaments

    Quentin M Smith et al.
    Direct single molecule visualization of striated muscle relaxation using thin filament tightropes reveals the concerted release of myosins, with implications for models of muscle function.
    1. Medicine
    2. Stem Cells and Regenerative Medicine

    Adult stem cell-derived complete lung organoid models emulate lung disease in COVID-19

    Courtney Tindle et al.
    An integrated stem cell-based disease modeling and computational approach demonstrates how proximal airway epithelium is critical for SARS-CoV-2 infectivity and distal alveolar cells are critical for simulating the host responses.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Comparison of transcriptional initiation by RNA polymerase II across eukaryotic species

    Natalia Petrenko, Kevin Struhl
    Although the preinitiation complex for transcriptional initiation by RNA polymerase II contains highly conserved general transcription factors, there are kinetic and compositional differences in the initiation process among eukaryotic species.
    1. Immunology and Inflammation

    Tissue environment, not ontogeny, defines murine intestinal intraepithelial T lymphocytes

    Alejandro J Brenes et al.
    In-depth proteomic analyses of intestinal tissue-resident intraepithelial T lymphocytes reveals how these cells are adapted to the intestinal environment through increased cholesterol and lipid metabolism, tailored metabolic profiles, receptors for interacting with epithelial cells, and tightly regulated signalling pathways.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structure and dynamics of the chromatin remodeler ALC1 bound to a PARylated nucleosome

    Luka Bacic et al.
    Analysis of conformational heterogeneity in cryo-EM data by a recently developed deep learning method reveals the structure and dynamics of the oncogenic chromatin remodeler ALC1 bound to a poly-ADP-ribosylated nucleosome.
    1. Microbiology and Infectious Disease

    A Tad-like apparatus is required for contact-dependent prey killing in predatory social bacteria

    Sofiene Seef et al.
    First identification of the molecular determinants driving contact-dependent predation in Myxococcus..
    1. Medicine
    2. Microbiology and Infectious Disease

    Non-nucleoside reverse transcriptase inhibitor-based combination antiretroviral therapy is associated with lower cell-associated HIV RNA and DNA levels compared to protease inhibitor-based therapy

    Alexander O Pasternak et al.
    In two independent cohorts, NNRTI-based cART regimens are associated with significantly lower cell-associated HIV RNA levels than PI-based regimens, suggesting more potent suppression of residual virus replication by NNRTI-based regimens.
    1. Biochemistry and Chemical Biology

    Witnessing the structural evolution of an RNA enzyme

    Xavier Portillo et al.
    An RNA enzyme is caught in the act of evolving a new structural domain within its active site, resulting in enhanced catalytic function.

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