410 results found
    1. Chromosomes and Gene Expression

    Tyrosine phosphorylation of RNA polymerase II CTD is associated with antisense promoter transcription and active enhancers in mammalian cells

    Nicolas Descostes et al.
    Genome-wide analysis reveals novel functions for a post-translational modification to the carboxy-terminal domain (CTD) of RNA Polymerase II in mammals.
    1. Cell Biology
    2. Immunology and Inflammation

    Small molecule inhibition of Csk alters affinity recognition by T cells

    Boryana N Manz et al.
    The T cell response, especially to weak agonists, is enhanced by acute Csk inhibition.
    1. Cell Biology

    The homophilic receptor PTPRK selectively dephosphorylates multiple junctional regulators to promote cell–cell adhesion

    Gareth W Fearnley et al.
    Systematic proteomic approaches identify several cell junction regulators as substrates for the homophilic receptor tyrosine phosphatase PTPRK and implicate its pseudophosphatase domain in substrate recognition.
    1. Immunology and Inflammation

    B cell activation involves nanoscale receptor reorganizations and inside-out signaling by Syk

    Kathrin Kläsener et al.
    Studying the earliest events in B cell activation reveals that the B cell antigen receptor is opened and activated via the phosphorylation and binding by the spleen tyrosine kinase (Syk).
    1. Cancer Biology
    2. Developmental Biology

    Jak2-mediated phosphorylation of Atoh1 is critical for medulloblastoma growth

    Tiemo J Klisch et al.
    Aberrant phosphorylation of tyrosine 78 on Atoh1 via Jak2 is responsible for sonic hedgehog type medulloblastoma growths in vivo.
    1. Cell Biology
    2. Human Biology and Medicine

    LRP1 integrates murine macrophage cholesterol homeostasis and inflammatory responses in atherosclerosis

    Xunde Xian et al.
    Tyrosine phosphorylation of the intracellular domain of LRP1 serves as a molecular switch to regulate cellular cholesterol homeostasis through nuclear hormone receptor-mediated regulation of the cellular cholesterol exporter ABCA1.
    1. Neuroscience

    APP modulates KCC2 expression and function in hippocampal GABAergic inhibition

    Ming Chen et al.
    APP interacts with KCC2 to limit the latter from tyrosine-phosphorylation and ubiquitination and thus subsequent degradation, revealing a novel molecular pathway in which APP regulates GABAergic signaling and thus inhibition in the hippocampus.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    RNAP II CTD tyrosine 1 performs diverse functions in vertebrate cells

    Jing-Ping Hsin et al.
    Phosphorylation of tyrosine 1 in the carboxy-terminal domain (CTD) of the largest subunit of RNA Polymerase (RNAP) II functions to stabilize this domain, and facilitates turnover of upstream antisense RNAs.
    1. Biochemistry and Chemical Biology

    Tyr1 phosphorylation promotes phosphorylation of Ser2 on the C-terminal domain of eukaryotic RNA polymerase II by P-TEFb

    Joshua E Mayfield et al.
    The phosphorylation of tyrosine in the heptad repeat of the C-terminal domain of the largest subunit of RNA polymerase II promotes Ser2 phosphorylation by P-TEFb for pausing release.

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