4,316 results found
    1. Physics of Living Systems

    Hybrid protein assembly-histone modification mechanism for PRC2-based epigenetic switching and memory

    Cecilia Lövkvist et al.
    Extra protein memory storage elements with positive feedbacks, in addition to histone modifications, can explain epigenetic switching and memory at the PRC2 target gene FLOWERING LOCUS C (FLC).
    1. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    FLEXIQuant-LF to quantify protein modification extent in label-free proteomics data

    Christoph N Schlaffner et al.
    FLEXIQuant-LF provides the framework to enable large-scale identification of differentially modified peptides and quantification of their modification extent in label-free mass spectrometry data without prior knowledge of the modification type.
    1. Cell Biology

    Site-specific phosphorylation and caspase cleavage of GFAP are new markers of Alexander disease severity

    Rachel A Battaglia et al.
    GFAP protein carries a distinct post-translational modification signature that facilitates its pathogenic accumulation and aggregation in astrocytes of patients who succumb to Alexander Disease very early in life.
    1. Microbiology and Infectious Disease

    N6-methyladenosine of HIV-1 RNA regulates viral infection and HIV-1 Gag protein expression

    Nagaraja Tirumuru et al.
    Human proteins that add or remove the methyladenosine modification of cellular RNA, or recognize methylated RNA significantly affect HIV-1 infection or viral protein synthesis in cells, suggesting an important role for HIV-1 RNA methylation in regulating viral replication.
    1. Physics of Living Systems

    Symmetry breaking meets multisite modification

    Vaidhiswaran Ramesh, J Krishnan
    Network symmetry represents a new vantage point for dissecting complex information processing characteristics in multisite modification, and the breaking of symmetry can confer ordering of modification and absolute concentration robustness.
    1. Cell Biology

    Site-specific glycosylation regulates the form and function of the intermediate filament cytoskeleton

    Heather J Tarbet et al.
    The in vivo modification of the canonical intermediate filament protein vimentin with O-linked beta-N-acetylglucosamine affects its function in filament assembly, cell migration and host-pathogen interactions.
    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

    A gene-expression screen identifies a non-toxic sumoylation inhibitor that mimics SUMO-less human LRH-1 in liver

    Miyuki Suzawa et al.
    The FDA-approved compound and plant extract tannic acid is a non-toxic chemical tool for modulating sumoylation in multiple platforms.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    AMPylation matches BiP activity to client protein load in the endoplasmic reticulum

    Steffen Preissler et al.
    Attaching a molecule of adenosine mono-phosphate (AMP) to the BiP protein at threonine 518 regulates its chaperone activity in the endoplasmic reticulum.
    1. Microbiology and Infectious Disease

    The Tudor SND1 protein is an m6A RNA reader essential for replication of Kaposi’s sarcoma-associated herpesvirus

    Belinda Baquero-Perez et al.
    SND1 has m6A-reading ability and is essential for Kaposi's sarcoma-associated lytic replication.

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