5,891 results found
    1. Structural Biology and Molecular Biophysics

    Structural basis of transcription inhibition by the DNA mimic protein Ocr of bacteriophage T7

    Fuzhou Ye et al.
    DNA mimicry Ocr protein, a well-studied T7 phage protein that inhibits host restriction enzymes, can also inhibit host transcription through competing with sigma factors in binding to RNA polymerase.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Linking plasmid-based beta-lactamases to their bacterial hosts using single-cell fusion PCR

    Peter J Diebold et al.
    One-step Isolation and Lysis (OIL) PCR offers a robust, versatile, accessible, and high-throughput method for linking mobile DNA with bacterial hosts in natural microbial communities.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    AFF4 binding to Tat-P-TEFb indirectly stimulates TAR recognition of super elongation complexes at the HIV promoter

    Ursula Schulze-Gahmen et al.
    AFF4 increases the combined selectivity of HIV Tat and TAR for super elongation complexes 330-fold over P-TEFb alone.
    1. Immunology and Inflammation

    Notch and TLR signaling coordinate monocyte cell fate and inflammation

    Jaba Gamrekelashvili et al.
    Notch signaling alters TLR-induced inflammation by skewing monocyte cell fate toward patrolling monocyte differentiation at the expense of macrophage cell fate.
    1. Immunology and Inflammation

    Functionally specialized human CD4+ T-cell subsets express physicochemically distinct TCRs

    Sofya A Kasatskaya et al.
    Functional subsets of helper CD4+ T cells carry TCR repertoires with distinct features that are reproducible across donors and are partially acquired at the level of thymic selection.
    1. Medicine

    Sensitivity of ID NOW and RT–PCR for detection of SARS-CoV-2 in an ambulatory population

    Yuan-Po Tu et al.
    Although the ID NOW platform is less sensitive than RT–PCR for identification of SARS-CoV-2 infection, it provides high positive and negative predictive values in low-prevalence populations.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Longitudinal high-throughput TCR repertoire profiling reveals the dynamics of T-cell memory formation after mild COVID-19 infection

    Anastasia A Minervina et al.
    Longitudinal tracking of individual T-cell clones reveals the expansion of pre-existing T-cell memory in response to SARS-CoV-2 infection.
    1. Cell Biology
    2. Immunology and Inflammation

    Arp2/3 complex-driven spatial patterning of the BCR enhances immune synapse formation, BCR signaling and B cell activation

    Madison Bolger-Munro et al.
    Arp2/3 complex-mediated actin polymerization shapes how B lymphocytes probe the surface of antigen-presenting cells, promotes coalescence of B cell receptor (BCR) microclusters, amplifies BCR signaling, and enhances B cell activation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Substrate specificity of TOR complex 2 is determined by a ubiquitin-fold domain of the Sin1 subunit

    Hisashi Tatebe et al.
    Sin1, a regulatory subunit of TOR protein kinase, has an evolutionarily conserved domain that specifically binds and recruits substrate for phosphorylation, and may represent a potential target for anti-cancer drugs.
    1. Immunology and Inflammation

    The activation of IgM- or isotype-switched IgG- and IgE-BCR exhibits distinct mechanical force sensitivity and threshold

    Zhengpeng Wan et al.
    The B cell receptors of naïve B cells need higher levels of mechanical force to be fully activated than those of memory B cells.

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