15 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Viral hijacking of a replicative helicase loader and its implications for helicase loading control and phage replication

    Iris V Hood, James M Berger
    A phage-encoded protein inhibits a bacterial replicative helicase loading factor by exploiting an internal site that auto-regulates loader self-assembly and ATPase activity.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Direct assessment of substrate binding to the Neurotransmitter:Sodium Symporter LeuT by solid state NMR

    Simon Erlendsson et al.
    Solid state NMR is unable to detect any association of substrate to the second binding site, S2, in the extracellular vestibule of the Neurotransmitter:Sodium Symporter LeuT.
    1. Evolutionary Biology

    Robust and accurate prediction of residue–residue interactions across protein interfaces using evolutionary information

    Sergey Ovchinnikov et al.
    Co-evolving residue pairs in the different components of a protein complex almost always make contact across the protein–protein interface, thus providing powerful restraints for the modeling of protein complexes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanisms of opening and closing of the bacterial replicative helicase

    Jillian Chase et al.
    Analysis of the Escherichia coli DnaB helicase•bacteriophage λ helicase loader (λP) complex provides insights into helicase opening, delivery to the origin and ssDNA entry, and closing in preparation for translocation.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Adaptation of hydroxymethylbutenyl diphosphate reductase enables volatile isoprenoid production

    Mareike Bongers et al.
    Differences in HDR product preference present a novel mechanism in plants to control substrate availability for short- and long-chain isoprenoids.
    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
    2. Structural Biology and Molecular Biophysics

    Assembling the Tat protein translocase

    Felicity Alcock et al.
    Evolutionary bioinformatics and experimentation are applied to the components of the Tat protein transport system to elucidate the structure of the membrane-bound receptor complex and to deduce a molecular description for its substrate-triggered activation.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Lipoate-binding proteins and specific lipoate-protein ligases in microbial sulfur oxidation reveal an atpyical role for an old cofactor

    Xinyun Cao et al.
    An unexpected new biological function was discovered for the universally conserved cofactor lipoate, as lipoate-binding proteins proved essential for a novel wide-spread prokaryotic sulfur oxidation pathway.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Roles of the membrane-reentrant β-hairpin-like loop of RseP protease in selective substrate cleavage

    Koichiro Akiyama et al.
    Mutational analysis and biochemical experiments suggest that the conserved β-hairpin-like membrane-reentrant loop of RseP - an S2P family intramembrane cleaving protease - helps to discriminate substrates by directly interacting with their transmembrane segments.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Transcription termination and antitermination of bacterial CRISPR arrays

    Anne M Stringer et al.
    Many bacteria use the Nus factor antitermination complex to prevent premature Rho-dependent transcription termination of their CRISPR arrays.

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