17 results found
    1. Structural Biology and Molecular Biophysics

    Insights into the ubiquitin transfer cascade catalyzed by the Legionella effector SidC

    David Jon Wasilko et al.
    Structural and biochemical studies reveal the molecular mechanisms for ubiquitin transfer by two unique bacterial ubiquitin E3 ligases.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Moyamoya disease factor RNF213 is a giant E3 ligase with a dynein-like core and a distinct ubiquitin-transfer mechanism

    Juraj Ahel et al.
    RNF213 is a giant E3 ligase with a dynein-like core and a unique ubiquitination mechanism that proceeds in a RING-independent manner and is linked with the Moyamoya disease.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    UBE2G1 governs the destruction of cereblon neomorphic substrates

    Gang Lu et al.
    Cereblon-based small-molecule degraders rely on the sequential action of ubiquitin-conjugating enzymes UBE2G1 and UBE2D3 to assemble K48-linked polyubiquitin chains on cereblon neomorphic substrates, resulting in their proteasomal degradation.
    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.
    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. Biochemistry and Chemical Biology
    2. Developmental Biology

    A specific E3 ligase/deubiquitinase pair modulates TBP protein levels during muscle differentiation

    Li Li et al.
    Proteasome-mediated degradation of the TATA-box binding protein (TBP) during terminal differentiation is regulated by the E3 ligase Huwe1 and the deubiquitinase USP10.
    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

    A sphingolipid-dependent diffusion barrier confines ER stress to the yeast mother cell

    Lori Clay et al.
    Sphingolipids govern the compartmentalization of yeast cells through the assembly of lateral diffusion barriers in ER membranes.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The E3 ubiquitin ligase TRIM23 regulates adipocyte differentiation via stabilization of the adipogenic activator PPARγ

    Masashi Watanabe et al.
    TRIM23 plays a critical role in the switching from early to late adipogenic enhanceosomes by stabilizing the PPARγ protein.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sterol homeostasis requires regulated degradation of squalene monooxygenase by the ubiquitin ligase Doa10/Teb4

    Ombretta Foresti et al.
    Parallel branches of the ERAD pathway regulate sterol synthesis at multiple steps via feedback inhibition.

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