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    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. Structural Biology and Molecular Biophysics

    A conformational switch regulates the ubiquitin ligase HUWE1

    Bodo Sander et al.
    The cancer-associated human ubiquitin ligase HUWE1 can adopt an auto-inhibited dimeric state, whose occupancy is regulated by competing intra- and intermolecular interactions of the dimerization region and by the tumor suppressor p14ARF.
    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. 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

    Structural and kinetic analysis of the COP9-Signalosome activation and the cullin-RING ubiquitin ligase deneddylation cycle

    Ruzbeh Mosadeghi et al.
    The general principles that underlie the mechanism of action of the COP9-Signalosome, a key regulator of the largest family of ubiquitin ligase enzymes in human cells, have been identified using structural and kinetic techniques.
    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. Cell Biology

    Phosphorylation and activation of ubiquitin-specific protease-14 by Akt regulates the ubiquitin-proteasome system

    Daichao Xu et al.
    Akt can regulate the ubiquitin-proteasome system by mediating phosphorylation and activation of USP14, which may have implications in the control of global proteostasis by growth factors and in tumorigenesis.
    1. Cancer Biology
    2. Cell Biology

    The CUL5 ubiquitin ligase complex mediates resistance to CDK9 and MCL1 inhibitors in lung cancer cells

    Shaheen Kabir et al.
    Targeting the CRL5 ubiquitin ligase complex in combination with CDK9 or MCL1 inhibition could combat innate and acquired resistance of cancer cells to MCL1-targeting therapeutics.
    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. Biochemistry and Chemical Biology

    SENP8 limits aberrant neddylation of NEDD8 pathway components to promote cullin-RING ubiquitin ligase function

    Kate E Coleman et al.
    Aberrant neddylation of non-cullin substrates disrupts normal cell cycle progression.