436 results found
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Non-Canonical G-quadruplexes cause the hCEB1 minisatellite instability in Saccharomyces cerevisiae

    Aurèle Piazza et al.
    A combination of genetics and biophysical approaches identifies an overlapping set of sequences that form non-canonical G-quadruplex structures in vitro and induce genomic instability in cells.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Genetic interactions of G-quadruplexes in humans

    Katherine G Zyner et al.
    For the first time, the spectrum of genes and pathways interacting with alternative DNA structures called G-quadruplexes in humans is revealed highlighting new possibilities for the pursuit of cancer therapies.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A mechanism for the extension and unfolding of parallel telomeric G-quadruplexes by human telomerase at single-molecule resolution

    Bishnu P Paudel et al.
    Human telomerase unfolds and extends parallel G-quadruplexes using a unique mechanism involving its RNA template.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Transcription-associated topoisomerase 2α (TOP2A) activity is a major effector of cytotoxicity induced by G-quadruplex ligands

    Madeleine Bossaert et al.
    Topoisomerase 2α DNA breaks induced by G-quadruplex ligands are associated with a topological stress resulting from a transcription-dependent mechanism and counteracted by DNA topoisomerase 1 and factors promoting transcription elongation.
    1. Cell Biology
    2. Neuroscience

    Small-molecule G-quadruplex stabilizers reveal a novel pathway of autophagy regulation in neurons

    Jose F Moruno-Manchon et al.
    G-quadruplex DNA regulates autophagy in neurons.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Aven recognition of RNA G-quadruplexes regulates translation of the mixed lineage leukemia protooncogenes

    Palaniraja Thandapani et al.
    Arginine methylation regulates mRNA translation of key protooncogenes via an RGG/RG motif-containing protein called Aven.
    1. Structural Biology and Molecular Biophysics

    Periodic DNA patrolling underlies diverse functions of Pif1 on R-loops and G-rich DNA

    Ruobo Zhou et al.
    Analyzing single molecules reveals that Pif1 family helicases periodically patrol DNA, which may explain this enzyme's ability to suppress genome instability at G-quadruplex motifs and transcriptional RNA-DNA hybrids (R-loops).
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    FMRP promotes RNA localization to neuronal projections through interactions between its RGG domain and G-quadruplex RNA sequences

    Raeann Goering et al.
    The molecular determinants for neuronal subcellular RNA transport by FMRP are defined, with interactions between RNA G-quadruplexes and the RGG domain of FMRP being of critical importance.
    1. Biochemistry and Chemical Biology

    The C9ORF72 GGGGCC expansion forms RNA G-quadruplex inclusions and sequesters hnRNP H to disrupt splicing in ALS brains

    Erin G Conlon et al.
    The C9orf72 expansion binds and sequesters the splicing factor hnRNP H leading to insoluble G-quadruplex aggregates that functionally reduce hnRNP H, thereby producing splicing defects.
    1. Biochemistry and Chemical Biology

    Control of the polyamine biosynthesis pathway by G2-quadruplexes

    Helen Louise Lightfoot et al.
    An ensemble of conserved G2-quadruplex structures in the untranslated regions of messenger RNAs from genes in the polyamine bioysynthesis pathway sense polyamine levels and regulate polyamine synthesis in cells.

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