2,874 results found
    1. Computational and Systems Biology

    Quantitative time-resolved analysis reveals intricate, differential regulation of standard- and immuno-proteasomes

    Juliane Liepe et al.
    Experimental and computational analyses reveal how proteasomal hydrolysis is regulated and show that peptide transport is the rate-limiting step and the main differentiating factor between human standard- and immuno-proteasomes.
    1. Cell Biology

    The proteasome biogenesis regulator Rpn4 cooperates with the unfolded protein response to promote ER stress resistance

    Rolf M Schmidt et al.
    Endoplasmic reticulum stress in yeast activates not only the UPR but also Rpn4, promoting the clearance of misfolded proteins from the cytosol as part of a modular cross-compartment stress response.
    1. Cell Biology
    2. Developmental Biology

    SUMO is a pervasive regulator of meiosis

    Nikhil R Bhagwat et al.
    Multi-dimensional global proteomics describes the SUMO-modified proteome during meiosis and reveals novel roles in regulating the key events of meiotic chromosome metabolism.
    1. Cell Biology

    Regulator of G protein signaling 12 enhances osteoclastogenesis by suppressing Nrf2-dependent antioxidant proteins to promote the generation of reactive oxygen species

    Andrew Ying Hui Ng et al.
    Rgs12 protein is a novel regulator of the Nrf2 protein by facilitating the proteasomal degradation of the transcription factor during osteoclast differentiation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteomic analysis of the response to cell cycle arrests in human myeloid leukemia cells

    Tony Ly et al.
    Building on previous work (Ly et al., 2014), we show that elutriated cells and arrested cells have similar patterns of DNA content and cyclin expression: however, a large fraction of the proteome changes detected in arrested cells are found to reflect arrest-specific responses rather than physiological cell cycle regulation.
    1. Biochemistry and Chemical Biology

    Immunoproteasome functions explained by divergence in cleavage specificity and regulation

    Michael B Winter et al.
    Divergence in immunoproteasome substrate specificity and regulation from the constitutive proteasome impacts peptide cleavage quantity and the cellular capacity of the ubiquitin-proteasome system.
    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. 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

    Paradoxical resistance of multiple myeloma to proteasome inhibitors by decreased levels of 19S proteasomal subunits

    Diego Acosta-Alvear et al.
    The nodes of the cytosolic proteostasis network can control sensitivity to proteasome inhibitors and decreased levels of the 19S proteasomal regulator can lead to increased resistance to inhibitors.
    1. Cell Biology
    2. Computational and Systems Biology

    Quantifying absolute gene expression profiles reveals distinct regulation of central carbon metabolism genes in yeast

    Rosemary Yu et al.
    Global gene expression control mechanisms are modeled using a large dataset consisting of absolute-quantitative proteomics, transcriptomics, and partial metabolomics of Saccharomyces cerevisiae at a wide range of growth conditions.

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