466 results found
    1. Biochemistry and Chemical Biology

    The HIV-1 Tat protein recruits a ubiquitin ligase to reorganize the 7SK snRNP for transcriptional activation

    Tyler B Faust et al.
    The HIV-1 Tat protein hijacks host non-degradative ubiquitination to trigger the nuclear import of the transcription elongation factor, P-TEFb.
    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. Neuroscience

    Parkin contributes to synaptic vesicle autophagy in Bassoon-deficient mice

    Sheila Hoffmann-Conaway et al.
    The presynaptic scaffolding protein Bassoon is involved in regulating neurotransmitter release by controlling synaptic vesicle pool size and vesicular protein turnover through increased ubiquitination and Parkin-dependent autophagy.
    1. Cell Biology
    2. Developmental Biology

    Negative feedback couples Hippo pathway activation with Kibra degradation independent of Yorkie-mediated transcription

    Sherzod A Tokamov et al.
    Kibra-mediated Hippo complex assembly promotes Kibra degradation in a negative feedback loop that is regulated by mechanical tension.
    1. Cancer Biology

    Daam2 driven degradation of VHL promotes gliomagenesis

    Wenyi Zhu et al.
    The glial developmental factor, Daam2, promotes glioma tumorigenesis by degrading the VHL tumor suppressor, illustrating how dysregulation of gliogenic factors can impact tumor suppressor activity and promote glioma tumorigenesis.
    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. 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. Neuroscience

    Nedd4 E3 ligase and beta-arrestins regulate ubiquitination, trafficking, and stability of the mGlu7 receptor

    Sanghyeon Lee et al.
    β-arrestins recruit Nedd4 ubiquitin E3 ligase to mGlu7 receptor and facilitate ubiquitination, endocytosis, ERK signaling, and stability of mGlu7 at presynaptic terminals.
    1. Cell Biology

    G-protein-coupled receptors regulate autophagy by ZBTB16-mediated ubiquitination and proteasomal degradation of Atg14L

    Tao Zhang et al.
    Under normal nutritional conditions, G-protein coupled receptors can control autophagy by regulating the degradation of key autophagic regulator Atg14L through ZBTB16-mediated ubiquitination and proteasome degradation.
    1. Cell Biology

    UBTD1 regulates ceramide balance and endolysosomal positioning to coordinate EGFR signaling

    Stéphanie Torrino et al.
    UBTD1 coordinates EGFR signaling by modulating ceramides level through ASAH1 ubiquitination and EGFR degradation through SQSTM1/p62 ubiquitination, which together impact cell proliferation.

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