43 results found
    1. Structural Biology and Molecular Biophysics

    Direct single molecule measurement of TCR triggering by agonist pMHC in living primary T cells

    Geoff P O'Donoghue, Rafal M Pielak ... Jay T Groves
    Quantitative observations of single-molecule binding between antigen and T cell receptor (TCR) in living primary T cells reveals unbinding kinetics, stoichiometry and signaling molecule recruitment, providing insights into the mechanisms of antigen recognition by the immune system.
    1. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    Rasgrp1 mutation increases naïve T-cell CD44 expression and drives mTOR-dependent accumulation of Helios+ T cells and autoantibodies

    Stephen R Daley, Kristen M Coakley ... Jeroen P Roose
    A single point mutation in a Ras activator leads to aberrant constitutive mTOR signaling in peripheral T cells that consequently accumulate as abnormal T helper cells and stimulate the production of autoantibodies by B cells.
    1. Cell Biology
    2. Immunology and Inflammation

    Distinct structural and catalytic roles for Zap70 in formation of the immunological synapse in CTL

    Misty R Jenkins, Jane C Stinchcombe ... Gillian M Griffiths
    Inhibition of the catalytic activity of the Zap70 kinase reveals that discrete TCR-regulated events control the remodelling of the actin cytoskeleton when the cytotoxic T cell interacts with its target.
    1. Cell Biology
    2. Immunology and Inflammation

    Actin foci facilitate activation of the phospholipase C-γ in primary T lymphocytes via the WASP pathway

    Sudha Kumari, David Depoil ... Michael L Dustin
    T cell receptor signaling is regulated by newly polymerized F-actin foci at the immunological synapse.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Bordetella adenylate cyclase toxin is a unique ligand of the integrin complement receptor 3

    Radim Osicka, Adriana Osickova ... Peter Sebo
    A toxin produced by the bacterium Bordetella pertussis preferentially binds to non-activated integrin complement receptor 3 outside of its ligand-binding I-domain and efficiently blocks downstream signaling of the integrin through elevation of cytosolic cAMP.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Time-resolved multimodal analysis of Src Homology 2 (SH2) domain binding in signaling by receptor tyrosine kinases

    Joshua A Jadwin, Dongmyung Oh ... Bruce J Mayer
    The recruitment of SH2-containing proteins to Epidermal Growth Factor in cells happens more slowly than predicted by in vitro techniques.
    1. Immunology and Inflammation

    Lys29-linkage of ASK1 by Skp1−Cullin 1−Fbxo21 ubiquitin ligase complex is required for antiviral innate response

    Zhou Yu, Taoyong Chen ... Jianli Wang
    By joining the Skp1-Cul1-Rbx1 SCF complex, Fbxo21 interacts with ASK1 and mediates Lys29-linkage of ASK1, leading to type I IFN production.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Affinity and dose of TCR engagement yield proportional enhancer and gene activity in CD4+ T cells

    Karmel A Allison, Eniko Sajti ... Christopher K Glass
    Pre-existing enhancers interpret T cell signaling strength in an analogue manner to direct quantitative changes in gene expression within the context of an overall digital response.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Affimer proteins are versatile and renewable affinity reagents

    Christian Tiede, Robert Bedford ... Darren Charles Tomlinson
    The Affimer technology represents renewable binding reagents for molecular biology, which provides research scientists and industry with an alternative to the recently criticised use of animal-produced antibodies.
    1. Cell Biology
    2. Immunology and Inflammation

    Substrate stiffness governs the initiation of B cell activation by the concerted signaling of PKCβ and focal adhesion kinase

    Samina Shaheen, Zhengpeng Wan ... Wanli Liu
    The combination of molecular imaging, genetic and pharmacological approaches revealed that BCR signaling and PKCβ-dependent activation of focal adhesion kinase (FAK) is required for B cell mechanosensing.

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