349 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    E3 ubiquitin ligase Bre1 couples sister chromatid cohesion establishment to DNA replication in Saccharomyces cerevisiae

    Wei Zhang et al.
    E3 ubiquitin ligase Bre1-induced H2B monoubiquitination is epigenetically important for recruiting replication factor Mcm10 and cohesion establishment factors Ctf4, Ctf18 and Eco1 to early replication origins to establish sister chromatid cohesion.
    1. Plant Biology

    Decoys provide a scalable platform for the identification of plant E3 ubiquitin ligases that regulate circadian function

    Ann Feke et al.
    The F-box and U-box E3 ubiquitin ligase decoy library is a powerful tool for the functional characterization of redundant E3 ubiquitin ligases, like MAC3A and MAC3B, novel circadian clock regulators.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The multi-subunit GID/CTLH E3 ubiquitin ligase promotes cell proliferation and targets the transcription factor Hbp1 for degradation

    Fabienne Lampert et al.
    Proteomic, biochemical and cell-based analyses of the heterodecameric core GID/CTLH E3 ligase complex reveal its molecular architecture, activity determinants, and function in targeting the tumor suppressor Hbp1 and other substrates required for cell proliferation.
    1. Cell Biology

    The sterol-responsive RNF145 E3 ubiquitin ligase mediates the degradation of HMG-CoA reductase together with gp78 and Hrd1

    Sam A Menzies et al.
    CRISPR/Cas9 genome-wide screens using sterol-sensitive endogenous HMG-CoA reductase (HMGCR) reporter identify the sterol-responsive RNF145 and gp78 as independently responsible for sterol-accelerated degradation of HMGCR, the rate-limiting enzyme of cholesterol biosynthesis.
    1. Cell Biology
    2. Immunology and Inflammation

    MAVS recruits multiple ubiquitin E3 ligases to activate antiviral signaling cascades

    Siqi Liu et al.
    A cell-free system combined with cell-based assays elucidate the biochemical mechanism of signal transduction mediated by the mitochondrial protein MAVS and delineates the role of ubiquitin E3 ligases in antiviral innate immune responses.
    1. Cell Biology
    2. Neuroscience

    The E3 ubiquitin ligase IDOL regulates synaptic ApoER2 levels and is important for plasticity and learning

    Jie Gao et al.
    Control of lipoprotein receptor protein levels at synapses by the E3 ubiquitin ligase IDOL is shown to be important for the plasticity of neuronal dendrites in vitro and learning and memory in mice.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of ubiquitin ligation and lysine prioritization by a HECT E3

    Hari B Kamadurai et al.
    Structural studies reveal the mechanism by which a HECT E3 ubiquitin ligase carries out E2-to-E3-to-substrate ubiquitin transfer and prioritizes target lysines for ubiquitination.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Sculpting ion channel functional expression with engineered ubiquitin ligases

    Scott A Kanner et al.
    Engineered E3 ubiquitin ligases are utilized to elucidate mechanisms underlying ubiquitin regulation of membrane proteins, and to achieve robust post-translational functional knockdown of ion channels.
    1. Cell Biology

    Cooperation of mitochondrial and ER factors in quality control of tail-anchored proteins

    Verena Dederer et al.
    The endoplasmic reticulum E3 ubiquitin ligase Doa10 and the mitochondrial AAA-ATPase Msp1 govern targeting fidelity of outer mitochondrial tail-anchored proteins by controlling cytoplasmic concentration and extracting mistargeted and orphan species.
    1. Chromosomes and Gene Expression

    RYBP stimulates PRC1 to shape chromatin-based communication between Polycomb repressive complexes

    Nathan R Rose et al.
    The E3 ubiquitin ligase activity of polycomb repressive complex 1 is stimulated by RYBP to support a histone modification-dependent communication between polycomb repressive complexes in mice.

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