739 results found
    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. 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. 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. Cell Biology
    2. Immunology and Inflammation

    Interaction mapping of endoplasmic reticulum ubiquitin ligases identifies modulators of innate immune signalling

    Emma J Fenech et al.
    Interaction mapping of ubiquitin ligase complexes embedded in the endoplasmic reticulum membrane has identified interactors of RNF26 that influence innate immune signalling.
    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. 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. 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. 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. Stem Cells and Regenerative Medicine

    The CUL4-DDB1 ubiquitin ligase complex controls adult and embryonic stem cell differentiation and homeostasis

    Jie Gao et al.
    DDB1, a component of the ubiquitin proteasome system, plays a role in both hematopoietic and embryonic stem cell self-renewal and differentiation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Robust cullin-RING ligase function is established by a multiplicity of poly-ubiquitylation pathways

    Spencer Hill et al.
    Human cullin-RING ligases are buffered to a much greater extent than had been previously appreciated, and the roles of ubiquitin chain extension enzymes are far more nuanced at physiological concentrations.

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