12 results found
    1. Microbiology and Infectious Disease

    Post-translational thioamidation of methyl-coenzyme M reductase, a key enzyme in methanogenic and methanotrophic Archaea

    Dipti D Nayak et al.
    Post-translational installation of thioglycine in methyl-coenzyme M reductase in the methanogenic archaeon Methanosarcina acetivorans is mediated by the tfuA-ycaO locus and stabilizes the protein secondary structure near the active site.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cellular encoding of Cy dyes for single-molecule imaging

    Lilia Leisle et al.
    Cyanine fluorophores are encoded as non-canonical amino acids to produce functional proteins in cell-free translation systems and live cells for single-molecule imaging.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The architecture of EMC reveals a path for membrane protein insertion

    John P O'Donnell et al.
    Structural and biochemical analysis of an abundant and conserved protein complex called EMC shows how it is likely to insert nascent membrane proteins into the endoplasmic reticulum membrane.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Topoisomerase VI senses and exploits both DNA crossings and bends to facilitate strand passage

    Timothy J Wendorff, James M Berger
    The engagement of DNA crossings is shown to license ATP hydrolysis and DNA cleavage by topoisomerase VI, a finding with mechanistic ramifications for related GHKL ATPases and meiotic recombination machineries.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Insight into the evolution of microbial metabolism from the deep-branching bacterium, Thermovibrio ammonificans

    Donato Giovannelli et al.
    The genome of Thermovibrio ammonificans encodes ancestral pathways (e.g., hydrogen oxidation) and more recently acquired ones (e.g., nitrate reduction) and a hybrid pathway for CO2 fixation.
    1. Biochemistry and Chemical Biology

    Tetramerisation of the CRISPR ring nuclease Crn3/Csx3 facilitates cyclic oligoadenylate cleavage

    Januka S Athukoralage et al.
    A widespread ribonuclease is a CRISPR-associated ring nuclease with a highly unusual cooperative mechanism involving tetramerisation of the enzyme.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Architecture of TAF11/TAF13/TBP complex suggests novel regulation properties of general transcription factor TFIID

    Kapil Gupta et al.
    Integrative structural biology reveals a novel complex comprising the TATA-box-binding protein, TBP, and two subunits, TAF11 and TAF13, of General Transcription Factor TFIID, suggesting a new regulatory state in TFIID function in RNA polymerase II transcription initiation.
    1. Structural Biology and Molecular Biophysics

    Casposase structure and the mechanistic link between DNA transposition and spacer acquisition by CRISPR-Cas

    Alison B Hickman et al.
    The tetrameric structure of a casposase bound to DNA and its biochemical properties show how a transposase could have evolved to perform CRISPR-Cas spacer acquisition.
    1. Biochemistry and Chemical Biology

    Comment on ‘YcgC represents a new protein deacetylase family in prokaryotes’

    Magdalena Kremer et al.
    We applied a combined synthetic biological, biochemical and mass-spectrometric approach to show that YcgC is not a member of a novel lysine deacetylase class in prokaryotes.

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