2,225 results found
    1. Developmental Biology

    Drosophila neprilysins control insulin signaling and food intake via cleavage of regulatory peptides

    Benjamin Hallier et al.
    The catalytic activity of a Drosophila neprilysin is critical to proper insulin expression and food intake by regulating homeostasis of distinct signaling peptides.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A vocabulary of ancient peptides at the origin of folded proteins

    Vikram Alva et al.
    A comparative study of modern proteins identifies 40 fragments that may represent the observable remnants of a primordial RNA-peptide world.
    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. 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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The Peptidisc, a simple method for stabilizing membrane proteins in detergent-free solution

    Michael Luke Carlson et al.
    A simple, yet elegant method for robust self-assembly of diverse membrane proteins into soluble peptide nanoparticles for their structural and functional analysis in detergent-free solutions.
    1. Neuroscience

    Luqin-like RYamide peptides regulate food-evoked responses in C. elegans

    Hayao Ohno et al.
    Identification and functional characterization of C. elegans luqin-like arginine-tyrosine-NH2 (RYamide) peptides reveal their critical role in feeding-related processes.
    1. Cancer Biology
    2. Developmental Biology

    The antimicrobial peptide defensin cooperates with tumour necrosis factor to drive tumour cell death in Drosophila

    Jean-Philippe Parvy et al.
    Natural activity of the antimicrobial peptide Defensin includes execution of tumour cell death by tumour necrosis factor in Drosophila.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insight into the activation of a class B G-protein-coupled receptor by peptide hormones in live human cells

    Lisa Seidel et al.
    Agonist and antagonist peptides of the corticotropin-releasing factor receptor type 1 adopt different folds and stabilize distinct conformations of the receptor transmembrane domain, which involves tilting of helices VI and VII around conserved glycine hinges.
    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. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Toxoplasma gondii peptide ligands open the gate of the HLA class I binding groove

    Curtis McMurtrey et al.
    T. gondii infection alters how peptide ligands are presented to the immune system by inducing a previously unreported structural change in Human Leukocyte Antigens (HLAs).

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