260 results found
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Repression of viral gene expression and replication by the unfolded protein response effector XBP1u

    Florian Hinte et al.
    A herpesvirus harnesses the unfolded protein response to regulate its own life cycle, revealing an unexpected role of XBP1u as a potent repressor of the most important viral promoter.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural and mutational analysis of the ribosome-arresting human XBP1u

    Vivekanandan Shanmuganathan et al.
    Two integrated approaches shed light on how XBP1 arrest peptide induces intermediate level of translational pausing and identify hotspot positions to make it stronger.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The multi-subunit GID/CTLH E3 ubiquitin ligase promotes cell proliferation and targets the transcription factor Hbp1 for degradation

    Fabienne Lampert et al.
    Proteomic, biochemical and cell-based analyses of the heterodecameric core GID/CTLH E3 ligase complex reveal its molecular architecture, activity determinants, and function in targeting the tumor suppressor Hbp1 and other substrates required for cell proliferation.
    1. Cell Biology

    Unfolded protein response transducer IRE1-mediated signaling independent of XBP1 mRNA splicing is not required for growth and development of medaka fish

    Tokiro Ishikawa et al.
    The unfolded protein response sensor/transducer IRE1-mediated splicing of XBP1 mRNA encoding its active downstream transcription factor to maintain the homeostasis of the endoplasmic reticulum is sufficient for growth and development of medaka fish.
    1. Developmental Biology

    Roles of C/EBP class bZip proteins in the growth and cell competition of Rp (‘Minute’) mutants in Drosophila

    Jorge Blanco et al.
    Xrp1 contributes to cell competition as a heterodimer with the Drosophila C/EBP homolog Irbp18 and although rapidly evolving is itself conserved beyond Drosophila.
    1. Developmental Biology

    Cell Competition: Counting the Minutes

    Stephano Mello, Dirk Bohmann
    A newly discovered mechanism that causes the 'Minute' phenotype in fruit flies can explain how organisms are able to eliminate the mutant cells that arise occasionally during development.
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    1. Microbiology and Infectious Disease

    An essential Staphylococcus aureus cell division protein directly regulates FtsZ dynamics

    Prahathees J Eswara et al.
    GpsB in Staphylococcus aureus directly regulates the central cell division protein FtsZ, a different function from that assigned for GpsB in other closely related organisms.
    1. Cancer Biology
    2. Cell Biology

    Caspase-mediated cleavage of IRE1 controls apoptotic cell commitment during endoplasmic reticulum stress

    Anna Shemorry et al.
    Biochemical and biological studies reveal that caspases feed back onto the Unfolded Protein Response by cleaving the ER-stress sensor IRE1 to produce a cytoprotective N-terminal fragment that inhibits BAX-dependent apoptosis.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    The PERK arm of the unfolded protein response regulates satellite cell-mediated skeletal muscle regeneration

    Guangyan Xiong et al.
    Genetic and biochemical analyses reveal that PERK is important for the survival of activated satellite stem cells during regeneration of injured skeletal muscle.
    1. Cell Biology

    Mammalian cell growth dynamics in mitosis

    Teemu P Miettinen et al.
    High-resolution single-cell mass accumulation and protein synthesis rate measurements are used to quantify the extent, dynamics and consequences of animal cell growth in mitosis and cytokinesis.

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