1,560 results found
    1. Evolutionary Biology

    Contingency and chance erase necessity in the experimental evolution of ancestral proteins

    Victoria Cochran Xie et al.
    Replicating experimental evolution from ancestral proteins shows that historical contingency steadily overwhelms chance and necessity as the primary cause of evolutionary variation in molecular sequences on long phylogenetic timescales.
    1. Cancer Biology
    2. Cell Biology

    Bim escapes displacement by BH3-mimetic anti-cancer drugs by double-bolt locking both Bcl-XL and Bcl-2

    Qian Liu et al.
    The pro-apoptotic BH3-protein Bim contains two distinct binding sites for anti-apoptotic proteins that together confer resistance of Bim/Bcl-2 and Bim/Bcl-XL complexes to BH3-mimetic drugs under development for use in humans.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The carboxyl-terminal sequence of bim enables bax activation and killing of unprimed cells

    Xiaoke Chi et al.
    The C-terminal membrane binding domain of Bim is shown to interact with and activate Bim enabling it to kill cells not dependent on anti-apoptotic proteins for survival.
    1. Immunology and Inflammation

    T cell-specific inhibition of multiple apoptotic pathways blocks negative selection and causes autoimmunity

    Megan L Burger et al.
    Using mice expressing a Bcl-2 mutant protein to suppress multiple central tolerance pathways, it is shown that central tolerance is crucial for preventing autoimmunity.
    1. Cell Biology

    Bid maintains mitochondrial cristae structure and function and protects against cardiac disease in an integrative genomics study

    Christi T Salisbury-Ruf et al.
    An integrative approach, combining genetic mouse and large-scale human genetics studies, was used to reveal a novel role for the Bcl-2 protein Bid in maintenance of mitochondrial function that alters susceptibility to myocardial infarction.
    1. Cancer Biology
    2. Computational and Systems Biology

    Computationally designed high specificity inhibitors delineate the roles of BCL2 family proteins in cancer

    Stephanie Berger et al.
    Six computationally designed and in vitro optimized protein inhibitors serve as molecular probes to reveal BCL2 profiles of different human cancers.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Epistatic mutations in PUMA BH3 drive an alternate binding mode to potently and selectively inhibit anti-apoptotic Bfl-1

    Justin M Jenson et al.
    Short peptides that bind tightly to anti-apoptotic protein Bfl-1 but not other Bcl-2 family members provide a tool for diagnosing cancer cell survival mechanisms and a lead for developing new therapeutics.
    1. Cancer Biology
    2. Microbiology and Infectious Disease

    Epstein-Barr virus ensures B cell survival by uniquely modulating apoptosis at early and late times after infection

    Alexander M Price et al.
    Epstein-Barr virus hijacks host anti-apoptotic machinery to ensure survival during latent infection.
    1. Cell Biology

    Disordered clusters of Bak dimers rupture mitochondria during apoptosis

    Rachel T Uren et al.
    Dimers of Bak assemble into clusters without using a distinct protein-protein interface, which may explain the apparent difficulties in obtaining high resolution structures of the pore complex and in targeting dimer-dimer interactions to regulate apoptosis.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Electron tomography visualization of HIV-1 fusion with target cells using fusion inhibitors to trap the pre-hairpin intermediate

    Mark S Ladinsky et al.
    Visualization of HIV-1 fusion by trapping the prehairpin intermediate.

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