605 results found
    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. 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. Cancer Biology

    Renal medullary carcinomas depend upon SMARCB1 loss and are sensitive to proteasome inhibition

    Andrew L Hong et al.
    Faithful models of RMC require SMARCB1 loss for survival, and genetic and small-molecule screens identify inhibition of the ubiquitin-proteasome system (UPS) as a potential therapeutic approach for SMARCB1 deficient cancers.
    1. Cell Biology

    The ubiquitin-proteasome system regulates focal adhesions at the leading edge of migrating cells

    Anjali Teckchandani, Jonathan A Cooper
    A ubiquitin E3 ligase localizes to focal adhesions at the front of migrating human cells where it regulates cytoskeletal dynamics by targeting a focal adhesion protein.
    1. Cell Biology
    2. Developmental Biology

    HSF-1 activates the ubiquitin proteasome system to promote non-apoptotic developmental cell death in C. elegans

    Maxime J Kinet et al.
    A pathway controlling non-apoptotic developmental cell death engages non-canonical death-promoting activities of the stress factor HSF-1, which, in turn, activates specific components of the ubiquitin-mediated degradation machinery.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    The E2 Marie Kondo and the CTLH E3 ligase clear deposited RNA binding proteins during the maternal-to-zygotic transition

    Michael Zavortink et al.
    In fruit flies, maternally deposited RNA-binding proteins are removed during the maternal-to-zygotic transition via a mechanism of translational upregulation of Kondo, the key E2 enzyme, at egg activation.
    1. Cell Biology
    2. Neuroscience

    A novel ALS-associated variant in UBQLN4 regulates motor axon morphogenesis

    Brittany M Edens et al.
    A novel ALS-associated variant in UBQLN4 impairs proteasome function and beta-catenin degradation to drive aberrant axon morphogenesis in motor neurons.
    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
    2. Cell Biology

    Doa10 is a membrane protein retrotranslocase in ER-associated protein degradation

    Claudia C Schmidt et al.
    Doa10, a membrane-embedded ubiquitin ligase, facilitates the removal of membrane proteins from the endoplasmic reticulum and cooperates with the Cdc48 ATPase in this process.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A conserved quality-control pathway that mediates degradation of unassembled ribosomal proteins

    Min-Kyung Sung et al.
    Tom1 is the ubiquitin ligase in yeast that anchors a protein quality control pathway that rapidly eliminates ribosomal proteins that fail to assemble into ribosomes.

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