1,741 results found
    1. Plant Biology

    Multiple pairs of allelic MLA immune receptor-powdery mildew AVRA effectors argue for a direct recognition mechanism

    Isabel ML Saur et al.
    Allelic MLA immune receptors have an exceptional propensity to directly detect sequence-unrelated pathogen effectors and this feature might have facilitated functional diversification of the receptor in the host population.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Organisms with alternative genetic codes resolve unassigned codons via mistranslation and ribosomal rescue

    Natalie Jing Ma et al.
    Cells resolve unassigned codons with near-cognate suppression, frameshifting, and ribosomal rescue mechanisms, demonstrating that unassigned codons are permissible in both natural and engineered genetic codes as barriers to horizontal gene transfer.
    1. Microbiology and Infectious Disease

    A plant-like mechanism coupling m6A reading to polyadenylation safeguards transcriptome integrity and developmental gene partitioning in Toxoplasma

    Dayana C Farhat et al.
    The epitranscriptomic-driven mRNA polyadenylation pathway protects transcriptome integrity by restricting transcriptional read-throughs and RNA chimera formation in apicomplexan parasites and plants.
    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
    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).
    1. Immunology and Inflammation

    Empty conformers of HLA-B preferentially bind CD8 and regulate CD8+ T cell function

    Jie Geng et al.
    HLA-B*35:01 molecules that are peptide-deficient are thermostable, bind CD8 with higher affinity than their peptide-filled versions, accumulate at immunological synapses and enhance antigen-specific CD8+ T cell immune responses.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Identifying the immune interactions underlying HLA class I disease associations

    Bisrat J Debebe et al.
    HLA class I-disease associations have been studied for decades; a new approach for investigating the underlying mechanism can overcome past problems with interpretation and help to understand the etiology of human diseases.
    1. Microbiology and Infectious Disease

    The Mla pathway in Acinetobacter baumannii has no demonstrable role in anterograde lipid transport

    Matthew J Powers et al.
    An outer membrane vesicle pulse-chase assay demonstrates that the Acinetobacter baumannii Mla system is a retrograde lipid transporter.
    1. Cancer Biology

    Loss of MGA repression mediated by an atypical polycomb complex promotes tumor progression and invasiveness

    Haritha Mathsyaraja et al.
    The MYC transcription factor network member MGA is a subunit of a non-canonical Polycomb complex, which, when inactivated, accelerates tumorigenesis in mouse models of cancer and proliferation in colon organoids.
    1. Genetics and Genomics

    Regulatory polymorphisms modulate the expression of HLA class II molecules and promote autoimmunity

    Prithvi Raj et al.
    Genetic variations that underlie common autoimmune disease genes are predominantly regulatory and modify the expression of multiple genes within the HLA gene complex and throughout the immune system.

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