10 results found
    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. 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. Structural Biology and Molecular Biophysics

    Ribosome•RelA structures reveal the mechanism of stringent response activation

    Anna B Loveland et al.
    Cryo-EM structures of 70S•RelA ribosome complexes reveal how cognate deacyl-tRNA activates RelA.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Ribonuclease L mediates the cell-lethal phenotype of double-stranded RNA editing enzyme ADAR1 deficiency in a human cell line

    Yize Li et al.
    Endogenous double-stranded RNA is generated in human cells and leads to RNase L activation and consequent cell death unless neutralized by adenosine deaminase acting on RNA1 (ADAR1).
    1. Evolutionary Biology

    Evolutionary conflicts and adverse effects of antiviral factors

    Daniel Sauter, Frank Kirchhoff
    Innate antiviral factors do not always perfectly distinguish between self and foreign, and potential adverse effects of antiviral defense mechanisms for the host have been discussed.
    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. Chromosomes and Gene Expression

    Maturation of selected human mitochondrial tRNAs requires deadenylation

    Sarah F Pearce et al.
    Removal of spurious poly(A) tails by the PDE12 exoribonuclease is required to maintain the integrity of human mitochondrial tRNAs and rRNAs and their availability for efficient mitochondrial translation.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Non-invasive measurement of mRNA decay reveals translation initiation as the major determinant of mRNA stability

    Leon Y Chan et al.
    Non-invasive mRNA stability measurements reveal that transcript lifetime is governed by a competition with translation initiation on a transcriptome-wide level.
    1. Microbiology and Infectious Disease

    Dynamic post-translational modification profiling of Mycobacterium tuberculosis-infected primary macrophages

    Jonathan M Budzik et al.
    Measurement of post-translational modifications in primary macrophages infected with Mtb revealed phosphorylation of TAX1BP1, an autophagy receptor that enables full maturation of the Mtb autophagosome.

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