1,128 results found
    1. Chromosomes and Gene Expression

    Monoallelically expressed noncoding RNAs form nucleolar territories on NOR-containing chromosomes and regulate rRNA expression

    Qinyu Hao, Minxue Liu ... Kannanganattu V Prasanth
    A novel family of nucleolus-enriched ncRNAs forms allele-specific territories on the nucleolar organizing region (NOR)-containing acrocentric chromosomes.
    1. Microbiology and Infectious Disease

    Ribosomal RNA (rRNA) sequences from 33 globally distributed mosquito species for improved metagenomics and species identification

    Cassandra Koh, Lionel Frangeul ... Maria-Carla Saleh
    A score-based read selection strategy enables the assembly of novel full-length ribosomal RNA sequences for mosquitoes, which improves the physical and computational removal of interfering ribosomal RNA reads in RNA-seq and provides another molecular marker for taxonomic and phylogenetic inquiries.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    RNA structures that resist degradation by Xrn1 produce a pathogenic Dengue virus RNA

    Erich G Chapman, Stephanie L Moon ... Jeffrey S Kieft
    The Dengue virus contains discretely folded RNA structures that confer the ability to resist a powerful host cell enzyme and produce a disease-inducing noncoding RNA.
    1. Chromosomes and Gene Expression

    Translational initiation in E. coli occurs at the correct sites genome-wide in the absence of mRNA-rRNA base-pairing

    Kazuki Saito, Rachel Green, Allen R Buskirk
    E. coli ribosomes incapable of base-pairing with the Shine-Dalgarno sequence are still selective for annotated start sites, indicating these sites are hard-wired for initiation by other mRNA features.
    1. Biochemistry and Chemical Biology

    Structural basis for AcrVA4 inhibition of specific CRISPR-Cas12a

    Gavin J Knott, Brady F Cress ... Jennifer A Doudna
    An ancestral helical bundle governs whether the crRNA-processing nuclease of CRISPR-Cas12a is exploited by a phage-encoded allosteric anti-CRISPR.
    1. Structural Biology and Molecular Biophysics

    Structural and mechanistic insights into ribosomal ITS2 RNA processing by nuclease-kinase machinery

    Jiyun Chen, Hong Chen ... Liang Liu
    The structures of full-length Las1-Grc3 complexes provide crucial insights into the activation mechanism of HEPN nuclease and the pathway of pre-rRNA processing in ribosome biosynthesis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Directed evolution of the rRNA methylating enzyme Cfr reveals molecular basis of antibiotic resistance

    Kaitlyn Tsai, Vanja Stojković ... Danica Galonić Fujimori
    Directed evolution of the resistance enzyme Cfr under antibiotic selection identifies increased Cfr expression and stability as strategies to boost resistance and reveals that Cfr modification of the ribosome confers resistance by sterically occluding binding of antibiotics.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Consistent and correctable bias in metagenomic sequencing experiments

    Michael R McLaren, Amy D Willis, Benjamin J Callahan
    A mathematical model of bias in marker-gene and metagenomic sequencing measurements explains systematic errors in defined mixtures of microbial species, and enables quantitative and reproducible investigation of biological communities.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Key features of the genetic architecture and evolution of host-microbe interactions revealed by high-resolution genetic mapping of the mucosa-associated gut microbiome in hybrid mice

    Shauni Doms, Hanna Fokt ... John F Baines
    Genetic variation influencing the gut microbiome is abundant among incipient mammalian host species, and cospeciating bacterial taxa display a unique genetic architecture.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The guide sRNA sequence determines the activity level of box C/D RNPs

    Andrea Graziadei, Frank Gabel ... Teresa Carlomagno
    Integrative structural biology reveals a conformational equilibrium in the Box C/D methylation enzyme that regulates the extent of site-specific 2'-O-rRNA methylation in dependence of the RNA sequence.

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