121 results found
    1. Structural Biology and Molecular Biophysics

    Molecular architecture of human polycomb repressive complex 2

    Claudio Ciferri et al.
    Electron microscopy has been used to produce the first three-dimensional image of the PRC2 gene-silencing complex.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    CarD uses a minor groove wedge mechanism to stabilize the RNA polymerase open promoter complex

    Brian Bae et al.
    The crystal structure of Thermus transcription activation complexes containing the transcriptional activator CarD reveals a new mechanism for the activation of transcription.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Chlamydia trachomatis-containing vacuole serves as deubiquitination platform to stabilize Mcl-1 and to interfere with host defense

    Annette Fischer et al.
    Obligate intracellular Chlamydia secrete a deubiquitinating enzyme (Cdu1) into the membrane of the Chlamydia-containing vacuole to deubiquitinate selected host proteins and support the survival of the bacteria during genital infection.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Dynamics and consequences of spliceosome E complex formation

    Joshua Donald Larson, Aaron A Hoskins
    Single molecule fluorescence analysis of spliceosome E complex formation reveals how tuning of U1 binding to the 5' SS facilitates efficient capture of the snRNP by pre-mRNAs.
    1. Structural Biology and Molecular Biophysics

    Lys63-linked ubiquitin chain adopts multiple conformational states for specific target recognition

    Zhu Liu et al.
    Lys63-linked diubiquitin exists as an ensemble of conformational states, each responsible for binding to a target protein through conformational selection.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Sae2/CtIP prevents R-loop accumulation in eukaryotic cells

    Nodar Makharashvili et al.
    The CtIP DNA repair enzyme is required for the removal of transcription-associated lesions in eukaryotic cells.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteasome storage granules protect proteasomes from autophagic degradation upon carbon starvation

    Richard S Marshall, Richard D Vierstra
    Proteasomes are protected from autophagic elimination upon carbon starvation by sequestration into cytoplasmic storage granules, which aid cell fitness by providing a cache of proteasomes that can be rapidly remobilized when carbon availability improves.
    1. Cell Biology

    COPI mediates recycling of an exocytic SNARE by recognition of a ubiquitin sorting signal

    Peng Xu et al.
    COPI vesicle coat protein recognizes a ubiquitin sorting signal on an exocytic v-SNARE to mediate recycling.
    1. Microbiology and Infectious Disease

    Severe infections emerge from commensal bacteria by adaptive evolution

    Bernadette C Young et al.
    Life-threatening S. aureus infections emerge from commensal nose bacteria in association with repeatable adaptive evolution.
    1. Cell Biology

    Ubiquitin turnover and endocytic trafficking in yeast are regulated by Ser57 phosphorylation of ubiquitin

    Sora Lee et al.
    Ser57 phosphorylation regulates ubiquitin homeostasis by inhibiting deubiquitylase-mediated recycling and promoting vacuolar degradation.

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