1,903 results found
    1. Genetics and Genomics

    Suppressing proteasome mediated processing of topoisomerase II DNA-protein complexes preserves genome integrity

    Nicholas Sciascia et al.
    Analysis of genome integrity in primary murine B-cells reveals how depleting 26S proteasome activity enhanced cell survival following treatment with topoisomerase poisons.
    1. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    In vitro proteasome processing of neo-splicetopes does not predict their presentation in vivo

    Gerald Willimsky et al.
    Analysis of neo-splicetope-specific T cell responses strongly questions the idea that in vitro proteasome-catalyzed peptide splicing reaction simulates the in vivo situation with the same high fidelity as the in vitro generation of non-spliced epitopes.
    1. Cell Biology

    Genome-wide CRISPRi screening identifies OCIAD1 as a prohibitin client and regulatory determinant of mitochondrial Complex III assembly in human cells

    Maxence Le Vasseur et al.
    OCIAD1 associates with prohibitin assemblies and regulates the proteolytic processing and stability of the catalytical Complex III subunit cytochrome c1.
    1. Cell Biology

    p97-dependent retrotranslocation and proteolytic processing govern formation of active Nrf1 upon proteasome inhibition

    Senthil K Radhakrishnan et al.
    The enzyme p97/VCP regulates the activity of the transcription factor Nrf1 to promote increased transcription of genes that encode proteasome subunits following inhibition of the proteasome.
    1. Structural Biology and Molecular Biophysics

    Measuring the optimal exposure for single particle cryo-EM using a 2.6 Å reconstruction of rotavirus VP6

    Timothy Grant, Nikolaus Grigorieff
    The resolution of electron cryo-microscopy can be improved by using optimal exposure values to filter video frames.
    1. Structural Biology and Molecular Biophysics

    A processive rotary mechanism couples substrate unfolding and proteolysis in the ClpXP degradation machinery

    Zev A Ripstein et al.
    Understanding of bacterial protein degradation is illuminated by cryo-EM structures of the substrate-bound ClpXP complex from Neisseria meningitidis at 2.3 to 3.3 Å resolution.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Wss1 metalloprotease partners with Cdc48/Doa1 in processing genotoxic SUMO conjugates

    Maxim Y Balakirev et al.
    Wss1 is both a metalloprotease and SUMO ligase found in association with Cdc48 and Doa1 and accumulating in the vacuole upon DNA damage.
    1. Biochemistry and Chemical Biology

    Specific lid-base contacts in the 26s proteasome control the conformational switching required for substrate degradation

    Eric R Greene et al.
    The 26S proteasome lid subcomplex acts as an external scaffold whose interactions with the ATPase motor stabilize the substrate-engagement-competent state, and control conformational changes upon engagement for subsequent degradation steps.
    1. Biochemistry and Chemical Biology

    The aspartyl protease DDI2 activates Nrf1 to compensate for proteasome dysfunction

    Shun Koizumi et al.
    Peptidase activity of DDI2 is required to activate Nrf1 in order to enable proteasome recovery in response to proteasome inhibition.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    The molecular basis for ANE syndrome revealed by the large ribosomal subunit processome interactome

    Kathleen L McCann et al.
    A single missense mutation in an RNA recognition motif within a nucleolar protein disrupts ribosome assembly and contributes to human pathology.

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