973 results found
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Diverse fates of uracilated HIV-1 DNA during infection of myeloid lineage cells

    Erik C Hansen et al.
    Uracil/adenine base pairs in HIV-1 DNA are attacked by the uracil base excision repair machinery in macrophages, which leads to HIV restriction and viral genome diversification by transcription-associated mutagenesis.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Primate TRIM5 proteins form hexagonal nets on HIV-1 capsids

    Yen-Li Li et al.
    To protect mammals against retroviral infections, TRIM5 restriction factors recognize viral capsids by forming complementary hexagonal nets that can adapt to the patterns of capsid protein subunits on the viral capsid surface.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    ATRX promotes maintenance of herpes simplex virus heterochromatin during chromatin stress

    Joseph M Cabral et al.
    Epigenetic restriction of herpes simplex virus occurs in a biphasic manner, in which ATRX maintains viral heterochromatin after an initial phase of chromatin deposition.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Mutational resilience of antiviral restriction favors primate TRIM5α in host-virus evolutionary arms races

    Jeannette L Tenthorey et al.
    Mutations in the TRIM5α retrovirus-binding interface frequently improve but rarely disrupt retroviral restriction.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    CpG and UpA dinucleotides in both coding and non-coding regions of echovirus 7 inhibit replication initiation post-entry

    Jelke Jan Fros et al.
    RNA virus replication is attenuated by an intrinsic restriction mechanism after introducing CpG/UpA dinucleotides into both non-translated and coding regions of viral genomes, which may be exploited in the design of attenuated virus vaccines.
    1. Structural Biology and Molecular Biophysics

    Structural basis of transcription inhibition by the DNA mimic protein Ocr of bacteriophage T7

    Fuzhou Ye et al.
    DNA mimicry Ocr protein, a well-studied T7 phage protein that inhibits host restriction enzymes, can also inhibit host transcription through competing with sigma factors in binding to RNA polymerase.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Mannose receptor is an HIV restriction factor counteracted by Vpr in macrophages

    Jay Lubow et al.
    Interactions between HIV-1 Env and human mannose receptor enhance HIV entry but restrict viral egress and spread in the absence of Vpr.
    1. Immunology and Inflammation

    Systemic hypoxia inhibits T cell response by limiting mitobiogenesis via matrix substrate-level phosphorylation arrest

    Amijai Saragovi et al.
    Systemic hypoxia model reveals the detrimental effect of hypoxia on mitochondrial biogenesis in activated T-cells and points at a new approach for improving viral resistance in patients with respiratory diseases.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    Fragile X mental retardation protein is a Zika virus restriction factor that is antagonized by subgenomic flaviviral RNA

    Ruben Soto-Acosta et al.
    The Zika virus subgenomic flaviviral RNA binds to and inhibits the fragile X mental retardation protein, a novel Zika virus restriction factor.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    IFI16, a nuclear innate immune DNA sensor, mediates epigenetic silencing of herpesvirus genomes by its association with H3K9 methyltransferases SUV39H1 and GLP

    Arunava Roy et al.
    The innate immune DNA sensor IFI16 is in association with H3K9 methyltransferases SUV39H1 and GLP under physiological conditions in the nucleus which facilitates the epigenetic silencing of foreign viral DNA.

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