898 results found
    1. Microbiology and Infectious Disease

    RNA virus attenuation by codon pair deoptimisation is an artefact of increases in CpG/UpA dinucleotide frequencies

    Fiona Tulloch et al.
    Attenuating candidate live virus vaccines by incorporating unfavoured codon pairs to reduce translation efficiency is actually mediated though changes in frequencies of CpG and UpA dinucleotides, which make viruses more visible to the innate immune system.
    1. Biochemistry and Chemical Biology

    Semisynthetic biosensors for mapping cellular concentrations of nicotinamide adenine dinucleotides

    Olivier Sallin et al.
    A family of fluorescent biosensors for nicotinamide adenine dinucleotides allows quantification of these cofactors in live cells with spatio-temporal resolution.
    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. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    KHNYN is essential for the zinc finger antiviral protein (ZAP) to restrict HIV-1 containing clustered CpG dinucleotides

    Mattia Ficarelli et al.
    KHNYN, a putative endoribonuclease, interacts with the zinc-finger antiviral protein (ZAP) and is required for the inhibition of HIV replication and RNA abundance by CpG dinucleotides.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Cap-proximal nucleotides via differential eIF4E binding and alternative promoter usage mediate translational response to energy stress

    Ana Tamarkin-Ben-Harush et al.
    Differential eIF4E binding to transcription initiation nucleotides and alternative promoter usage of eIF1A, PABP and other genes are involved in the response of the translation machinery to energy stress.
    1. Microbiology and Infectious Disease

    Elevation of CpG frequencies in influenza A genome attenuates pathogenicity but enhances host response to infection

    Eleanor Gaunt et al.
    Mutants of influenza A virus with increased CpG dinucleotide frequencies show restricted replication and reduced or absent pathogenicity, and powerful host innate and adaptive responses to infection that confer immunity to re-infection.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    GE23077 binds to the RNA polymerase ‘i’ and ‘i+1’ sites and prevents the binding of initiating nucleotides

    Yu Zhang et al.
    The cyclic-peptide antibiotic GE23077 inhibits bacterial RNA polymerase through a novel target that exhibits low susceptibility to target-based resistance and that enables synthesis of bipartite inhibitors that are exceptionally potent and refractory to target-based resistance.
    1. Cell Biology

    Nicotinamide adenine dinucleotide is transported into mammalian mitochondria

    Antonio Davila et al.
    Stable isotope labeling reveals that NAD crosses the inner membrane of mammalian mitochondria via an unknown transporter.
    1. Plant Biology

    A lectin receptor kinase as a potential sensor for extracellular nicotinamide adenine dinucleotide in Arabidopsis thaliana

    Chenggang Wang et al.
    Genetic and biochemical analyses demonstrate that cell-surface lectin receptors can potentially function as extracellular NAD+-binding receptors and provide direct evidence for extracellular NAD+ being a bona fide endogenous signaling molecule in plants.
    1. Biochemistry and Chemical Biology

    RNA World: Visualizing primer extension without enzymes

    John C Chaput
    X-ray crystallography has been used to observe the synthesis of RNA in the absence of enzymes with atomic resolution.
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