122 results found
    1. Microbiology and Infectious Disease

    Programmed genome editing of the omega-1 ribonuclease of the blood fluke, Schistosoma mansoni

    Wannaporn Ittiprasert et al.
    Gene knock-out of the omega-1 ribonuclease of Schistosoma mansoni eggs resulted in immunologically impaired phenotype, showcasing the novel application of CRISPR/Cas9 genome editing and utility for functional genomics in schistosomes.
    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. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    sRNA-mediated activation of gene expression by inhibition of 5'-3’ exonucleolytic mRNA degradation

    Sylvain Durand et al.
    Small regulatory RNAs are able to modulate mRNA degradation rates by controlling access to the 5' end of mRNAs in bacteria.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and mechanistic features of the prokaryotic minimal RNase P

    Rebecca Feyh et al.
    The novel cryo-electron microscopy structure of a bacterial protein-only RNase P illustrates how a small protein oligomerizes into a dodecameric assembly to catalyze the 5’-end maturation of tRNAs.
    1. Microbiology and Infectious Disease

    A dedicated diribonucleotidase resolves a key bottleneck for the terminal step of RNA degradation

    Soo-Kyoung Kim et al.
    RNA degradation is completed through specific intermediates, such as diribonucleotides, which must be removed from the cells by a specific enzyme.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Tracing a protein’s folding pathway over evolutionary time using ancestral sequence reconstruction and hydrogen exchange

    Shion An Lim et al.
    Pulsed-labeling hydrogen exchange on the ribonuclease H family show that the major folding intermediate is conserved over three billion years of evolution, but the path leading to this intermediate varies.
    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. 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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct and evolutionary conserved structural features of the human nuclear exosome complex

    Piotr Gerlach et al.
    Cryo-EM structure and biochemical characterization of the human nuclear exosome reveals its specific properties with respect to the yeast complex, underscoring the evolutionary conservation of the RNA-channeling mechanisms and hMTR4 helicase recruitment.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    RISC-interacting clearing 3’- 5’ exoribonucleases (RICEs) degrade uridylated cleavage fragments to maintain functional RISC in Arabidopsis thaliana

    Zhonghui Zhang et al.
    AGO protein-interacting exoribonucleases clear RNA induced silencing complex (RISC)-resulting 5' cleavage products in time to recycle RISC and miRNAs.

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