716 results found
    1. Microbiology and Infectious Disease

    A type III-A CRISPR-Cas system employs degradosome nucleases to ensure robust immunity

    Lucy Chou-Zheng, Asma Hatoum-Aslan
    Degradosome-associated nucleases PNPase and RNase J2 are required for type III CRISPR immunity against diverse nucleic acid invaders originating from plasmid and phage.
    1. Biochemistry and Chemical Biology

    Control of cyclic oligoadenylate synthesis in a type III CRISPR system

    Christophe Rouillon et al.
    Generation of the anti-viral second messenger cyclic oligoadenylate by type III CRISPR systems is tightly controlled in response to viral RNA load and sequence.
    1. Biochemistry and Chemical Biology

    The dynamic interplay of host and viral enzymes in type III CRISPR-mediated cyclic nucleotide signalling

    Januka S Athukoralage et al.
    The dynamic interplay between type III CRISPR enzymes governs cyclic nucleotide levels and infection outcomes in virus-host conflict.
    1. Microbiology and Infectious Disease

    Type III CRISPR-Cas systems can provide redundancy to counteract viral escape from type I systems

    Sukrit Silas et al.
    Cooperation between evolutionarily disparate CRISPR-Cas modules allows bacteria to counter mutational escape by viruses.
    1. Biochemistry and Chemical Biology

    Tetramerisation of the CRISPR ring nuclease Crn3/Csx3 facilitates cyclic oligoadenylate cleavage

    Januka S Athukoralage et al.
    A widespread ribonuclease is a CRISPR-associated ring nuclease with a highly unusual cooperative mechanism involving tetramerisation of the enzyme.
    1. Microbiology and Infectious Disease

    Functional metagenomics-guided discovery of potent Cas9 inhibitors in the human microbiome

    Kevin J Forsberg et al.
    A high-throughput, activity-based selection identifies many phage-derived inhibitors of Cas9 from human fecal and oral metagenomes, with at least one inhibitor acting via a novel mechanism.
    1. Genetics and Genomics
    2. Evolutionary Biology

    Current CRISPR gene drive systems are likely to be highly invasive in wild populations

    Charleston Noble et al.
    If released in the wild, current CRISPR-based gene drive systems designed to alter populations could spread much farther than intended, despite the evolution of drive resistance.
    1. Cell Biology

    Genome-wide interrogation of extracellular vesicle biology using barcoded miRNAs

    Albert Lu et al.
    A screen using artificially barcoded, exosomal microRNAs, paired with CRISPR guide RNAs, helped identify new players in multivesicular endosome exocytosis and a role for Wnt signaling.
    1. Microbiology and Infectious Disease

    A virus-packageable CRISPR screen identifies host factors mediating interferon inhibition of HIV

    Molly OhAinle et al.
    Host restriction factors that block cross-species transmission also play a role in limiting the replication of highly-adapted HIV-1 in IFN-stimulated cells.

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