120 results found
  1. June 2013

    Episode 1: June 2013

    In the first eLife podcast we hear about the origins of multicellularity, the Irish potato famine, hepatitis viruses, how fog affects the behaviour of car drivers, and the evolution of chromatin.
    1. Chromosomes and Gene Expression

    The fail-safe mechanism of post-transcriptional silencing of unspliced HAC1 mRNA

    Rachael Di Santo et al.
    The unspliced HAC1 mRNA does not give rise to detectable protein in budding yeast, despite its cytoplasmic localization, due to a two-part post-transcriptional silencing mechanism.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis of transcription arrest by coliphage HK022 Nun in an Escherichia coli RNA polymerase elongation complex

    Jin Young Kang et al.
    Cryo-electron microscopy structures show how coliphage HK022 Nun blocks Escherichia coli RNA polymerase translocation by mediating multiple interactions between the RNA polymerase and nucleic acids.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Population genomics reveals the origin and asexual evolution of human infective trypanosomes

    William Weir et al.
    The protozoan parasite Trypanosoma brucei gambiense has undergone recent clonal evolution that reveals the theoretically predicted Meselson effect at a genome-wide level.
    1. Genetics and Genomics

    Firefly genomes illuminate parallel origins of bioluminescence in beetles

    Timothy R Fallon et al.
    The first genomic view of beetle luciferase evolution indicates evolutionary independence of luciferase between fireflies and click-beetles, and provide valuable datasets which will accelerate the discovery of new biotechnological tools.
    1. Microbiology and Infectious Disease

    Quantitative microscopy of functional HIV post-entry complexes reveals association of replication with the viral capsid

    Ke Peng et al.
    A robust method to quantitatively visualize HIV-1 replication complexes in infected cells shows that these complexes remain associated with the viral capsid beyond nuclear import in primary macrophages.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A PALB2-interacting domain in RNF168 couples homologous recombination to DNA break-induced chromatin ubiquitylation

    Martijn S Luijsterburg et al.
    A new mechanism is uncovered by which the RNF168 ubiquitin ligase couples PALB2-dependent homologous recombination to H2A ubiquitylation to promote DNA repair and preserve genome integrity.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Heterochromatin assembly by interrupted Sir3 bridges across neighboring nucleosomes

    Reza Behrouzi et al.
    Cooperative association of a histone-binding complex with pairs of appropriately modified nucleosomes, which form fundamental units of binding, mediates selective heterochromatin assembly and spreading.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Persistent inflammation during anti-tuberculosis treatment with diabetes comorbidity

    Nathella Pavan Kumar et al.
    Systemic inflammation is greater in individuals with concurrent TB and diabetes than in euglycemic individuals with TB, and this disparity persists through the full 6-month course of anti-tubercular treatment.
    1. Cancer Biology

    Horizontal transfer of whole mitochondria restores tumorigenic potential in mitochondrial DNA-deficient cancer cells

    Lan-Feng Dong et al.
    A genetic approach documents that mitochondrial DNA moves from donor cells to recipient mtDNA-depleted cells in whole mitochondria and that this restores mitochondrial respiration and the capacity of the cells to form tumours.

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