486 results found
    1. Cell Biology
    2. Evolutionary Biology

    Chromatin is an ancient innovation conserved between Archaea and Eukarya

    Ron Ammar et al.
    Similarities in the way that nucleosomes are organized into chromatin in archaea and eukaryotes suggest that chromatin might have been involved in gene regulation before its role in DNA packaging evolved.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Archaeal TFEα/β is a hybrid of TFIIE and the RNA polymerase III subcomplex hRPC62/39

    Fabian Blombach et al.
    An archaeal basal transcription factor containing an iron-sulphur cluster sheds light on the evolution of transcription machineries in archaea and eukaryotes.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    The DNA-binding protein HTa from Thermoplasma acidophilum is an archaeal histone analog

    Antoine Hocher et al.
    In Thermoplasma acidophilum, an archaeon without histones, a DNA-binding protein acquired from bacteria via horizontal gene transfer mediates histone-like chromatin architecture.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Archaeal chromatin ‘slinkies’ are inherently dynamic complexes with deflected DNA wrapping pathways

    Samuel Bowerman et al.
    Archaeal histones compact DNA into nucleosome-like particles of varying sizes that contort sporadically and reorient DNA wrapping.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Chromatinization of Escherichia coli with archaeal histones

    Maria Rojec et al.
    Escherichia coli is surprisingly tolerant to chromatinization by archaeal histones, suggesting that histones can become established as ubiquitous chromatin proteins without interfering critically with some key DNA-templated processes.
    1. Structural Biology and Molecular Biophysics

    Structure and in situ organisation of the Pyrococcus furiosus archaellum machinery

    Bertram Daum et al.
    Using both electron cryo-tomography and helical reconstruction, the first structure of the entire archaellum machinery with an assembled filament has been determined, providing the structural basis for our understanding of archaeal motility.
    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. Immunology and Inflammation

    HDAC3 restrains CD8-lineage genes to maintain a bi-potential state in CD4+CD8+ thymocytes for CD4-lineage commitment

    Rachael Laura Philips et al.
    CD4 lineage commitment requires HDAC3 to prevent premature upregulation of CD8 lineage genes during T cell development.
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    Avoidance of stochastic RNA interactions can be harnessed to control protein expression levels in bacteria and archaea

    Sinan Uğur Umu et al.
    Stochastic mRNA and non-coding RNA hybridisation has a major impact on protein expression.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The interplay at the replisome mitigates the impact of oxidative damage on the genetic integrity of hyperthermophilic Archaea

    Tom Killelea et al.
    An investigation into 8-oxodeoxguanosine bypass by archaeal DNA polymerases.

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