4,695 results found
    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. 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. 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. Structural Biology and Molecular Biophysics

    Direct single molecule measurement of TCR triggering by agonist pMHC in living primary T cells

    Geoff P O'Donoghue et al.
    Quantitative observations of single-molecule binding between antigen and T cell receptor (TCR) in living primary T cells reveals unbinding kinetics, stoichiometry and signaling molecule recruitment, providing insights into the mechanisms of antigen recognition by the immune system.
    1. Cell Biology

    Atg9 antagonizes TOR signaling to regulate intestinal cell growth and epithelial homeostasis in Drosophila

    Jung-Kun Wen et al.
    Atg9 inhibits TOR signaling to regulate cell growth and tissue homeostasis in Drosophila adult midgut.
    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. Microbiology and Infectious Disease

    The microbiota protects from viral-induced neurologic damage through microglia-intrinsic TLR signaling

    D Garrett Brown et al.
    Immune stimulation from the microbiota prevents neurological damage associated with viral infection of the central nervous system.
    1. Immunology and Inflammation

    Tissue-specific shaping of the TCR repertoire and antigen specificity of iNKT cells

    Rebeca Jimeno et al.
    The tissue environment shapes the lipid recognition capacity of natural killer T cells.
    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.
    1. Immunology and Inflammation

    Different TCR-induced T lymphocyte responses are potentiated by stiffness with variable sensitivity

    Michael Saitakis et al.
    Multiple functions of human T lymphocytes are shown to be potentiated within a wide range of physiological cell and tissue rigidities.

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