68 results found
    1. Structural Biology and Molecular Biophysics

    Atomic structure of the 26S proteasome lid reveals the mechanism of deubiquitinase inhibition

    Corey M Dambacher et al.
    Within the isolated lid sub-complex of the proteasome, a finely tuned network of interactions maintains the deubiquitinase in an inhibited conformation; dramatic rearrangements of the lid subunits upon incorporation into the holoenzyme lead to the deubiquitinase’s activation.
    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. Cell Biology

    Ubiquitin turnover and endocytic trafficking in yeast are regulated by Ser57 phosphorylation of ubiquitin

    Sora Lee et al.
    Ser57 phosphorylation regulates ubiquitin homeostasis by inhibiting deubiquitylase-mediated recycling and promoting vacuolar degradation.
    1. Cell Biology

    USP16 counteracts mono-ubiquitination of RPS27a and promotes maturation of the 40S ribosomal subunit

    Christian Montellese et al.
    The deubiquitinase USP16 is associated with cytoplasmic precursors of 40S ribosomal subunits and promotes their final maturation by removal of trans-monoubiquitin from RPS27a.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Chlamydia trachomatis-containing vacuole serves as deubiquitination platform to stabilize Mcl-1 and to interfere with host defense

    Annette Fischer et al.
    Obligate intracellular Chlamydia secrete a deubiquitinating enzyme (Cdu1) into the membrane of the Chlamydia-containing vacuole to deubiquitinate selected host proteins and support the survival of the bacteria during genital infection.
    1. Cell Biology

    USP13 antagonizes gp78 to maintain functionality of a chaperone in ER-associated degradation

    Yanfen Liu et al.
    A deubiquitinase antagonizes the activity of an associated E3 ligase to prevent uncontrolled ubiquitination of a degradation machinery protein and thus maintain its functionality in protein quality control at the endoplasmic reticulum.
    1. Developmental Biology
    2. Neuroscience

    USP5/Leon deubiquitinase confines postsynaptic growth by maintaining ubiquitin homeostasis through Ubiquilin

    Chien-Hsiang Wang et al.
    Maintenance of ubiquitin homeostasis is essential for proper control of the size of postsynaptic density and the growth of specialized membrane structure.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Cdc48 regulates a deubiquitylase cascade critical for mitochondrial fusion

    Tânia Simões et al.
    A signaling pathway—comprising a linear sequence of the ubiquitin-selective chaperone Cdc48/p97 and the deubiquitylases Ubp12 and Ubp2—synergistically regulates mitochondrial fusion, thereby fine-tuning ubiquitylation of the mitofusin Fzo1.
    1. Plant Biology

    Dynamic ubiquitination determines transcriptional activity of the plant immune coactivator NPR1

    Michael J Skelly et al.
    Expression of plant immune genes is controlled by the opposing actions of ubiquitin ligases and deubiquitinases that modify the master coactivator NPR1, thereby regulating its intrinsic transcriptional activity.
    1. Cancer Biology
    2. Human Biology and Medicine

    Cancer Therapeutics: Partial loss of genes might open therapeutic window

    Bo Liu, Omar Abdel-Wahab
    The loss of genes that encode RNA splicing factors weakens cancer cells in a way that could be exploited by new approaches to treatment.
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