2,405 results found
    1. Cell Biology

    COPI mediates recycling of an exocytic SNARE by recognition of a ubiquitin sorting signal

    Peng Xu et al.
    COPI vesicle coat protein recognizes a ubiquitin sorting signal on an exocytic v-SNARE to mediate recycling.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova et al.
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    1. Computational and Systems Biology

    A network of epigenetic modifiers and DNA repair genes controls tissue-specific copy number alteration preference

    Dina Cramer et al.
    The genetic background of a cancer cell and the chromatin organization of the tissue-of-origin impact the amount, length and position of somatic copy number alterations in cancer.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Phosphatidylinositol 3-kinase and COPII generate LC3 lipidation vesicles from the ER-Golgi intermediate compartment

    Liang Ge et al.
    Building on previous work (Ge et al., 2013), it is shown that the ER-Golgi intermediate compartment is a platform for the production of COPII vesicles as precursor membranes for the lipidation of LC3, which is an essential step in autophagosome biogenesis.
    1. Cancer Biology
    2. Human Biology and Medicine

    Copy-number and gene dependency analysis reveals partial copy loss of wild-type SF3B1 as a novel cancer vulnerability

    Brenton R Paolella et al.
    Partial copy loss of spliceosome genes are common non-driver gene dependencies in cancer.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Structural and kinetic analysis of the COP9-Signalosome activation and the cullin-RING ubiquitin ligase deneddylation cycle

    Ruzbeh Mosadeghi et al.
    The general principles that underlie the mechanism of action of the COP9-Signalosome, a key regulator of the largest family of ubiquitin ligase enzymes in human cells, have been identified using structural and kinetic techniques.
    1. Cell Biology
    2. Genetics and Genomics

    Endogenous RNA interference is driven by copy number

    Cristina Cruz, Jonathan Houseley
    The ability to target transcripts from high-copy regions of the genome is an emergent property of a minimal RNA interference system.
    1. Cell Biology

    Epidermal Growth Factor Receptor neddylation is regulated by a desmosomal-COP9 (Constitutive Photomorphogenesis 9) signalosome complex

    Nicole Ann Najor et al.
    A protein interaction screen revealed desmosomes as a scaffold for the COP9 de-neddylating complex, to promote epidermal differentiation by governing the balance of Nedd8 and Ubiquitin modifications on Epidermal Growth Factor Receptor.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The structure of the COPI coat determined within the cell

    Yury S Bykov et al.
    Cryo-electron tomography of COPI vesicles in the Golgi reveals coat structure, disassembly dynamics, cargo binding, and morphological variability.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    ER retention is imposed by COPII protein sorting and attenuated by 4-phenylbutyrate

    Wenfu Ma et al.
    The COPII coat protein, in association with p24 machinery molecules, actively excludes misfolded and resident proteins from endoplasmic reticulum-derived transport vesicles.

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