2,917 results found
    1. Cell Biology
    2. Immunology and Inflammation

    TAPBPR alters MHC class I peptide presentation by functioning as a peptide exchange catalyst

    Clemens Hermann et al.
    We reveal TAPBPR is a peptide exchange catalyst which restricts the peptide repertoire presented by MHC I on cells, a finding which has important implications for all aspects of immune recognition.
    1. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    Method development and characterisation of the low-molecular-weight peptidome of human wound fluids

    Mariena JA van der Plas et al.
    Peptidomics method development and analysis of qualitative differences of peptide patterns in human wound fluids provide potential biomarkers for wound healing and infection.
    1. Structural Biology and Molecular Biophysics

    Structural basis of ribosomal peptide macrocyclization in plants

    Joel Haywood et al.
    The first crystal structure of an active plant asparaginyl endopeptidase reveals a tetrahedral intermediate state in its active site, which may help to explain why these enzymes have been independently recruited to perform peptide macrocyclization.
    1. Immunology and Inflammation

    T cell immunodominance is dictated by the positively selecting self-peptide

    Wan-Lin Lo et al.
    The T cell repertoire can display immunodominance to an epitope as a result of optimal positive selection in the thymus by one self-peptide/MHC ligand.
    1. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    A loop structure allows TAPBPR to exert its dual function as MHC I chaperone and peptide editor

    Lina Sagert et al.
    A dedicated structural element facilitates chaperone and antigenic peptide selector function of TAP-associated glycoprotein, a major quality assurance auditor in adaptive immunity.
    1. Biochemistry and Chemical Biology

    Thermodynamic evidence for a dual transport mechanism in a POT peptide transporter

    Joanne L Parker et al.
    Two thermodynamically distinct transport mechanisms operating within the same binding site explains the remarkable promiscuity of POT family transporters towards peptide and drug ligands.
    1. Immunology and Inflammation

    Variations in HLA-B cell surface expression, half-life and extracellular antigen receptivity

    Brogan Yarzabek et al.
    Lymphocytes and monocytes maintain their cell surface HLA-B via different mechanisms, which in turn differently influence cell-surface expression, half-life and peptide receptivity of HLA-B allotypes.
    1. Immunology and Inflammation

    Expression levels of MHC class I molecules are inversely correlated with promiscuity of peptide binding

    Paul E Chappell et al.
    The number of different peptides presented by major histocompatibility complex class I molecules to the immune system's T lymphocytes is inversely correlated with cell surface expression and is strongly associated with the response to infectious disease.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Quantitative mapping of protein-peptide affinity landscapes using spectrally encoded beads

    Huy Quoc Nguyen et al.
    A novel high-throughput method for measuring many weak protein-peptide affinities simultaneously reveals how calcineurin, a human phosphatase essential for the immune response, recognizes its peptide substrates.
    1. Biochemistry and Chemical Biology

    Genome-wide effects of the antimicrobial peptide apidaecin on translation termination in bacteria

    Kyle Mangano et al.
    Inhibition of bacterial protein synthesis by an antimicrobial peptide apidaecin triggers translation arrest at the stop codons, ribosome queuing and pervasive stop codon readthrough.

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