13 results found
    1. Physics of Living Systems

    Asymmetric random walks reveal that the chemotaxis network modulates flagellar rotational bias in Helicobacter pylori

    Jyot D Antani et al.
    Asymmetric forward and backward swimming speeds reveal that the rotational bias, and not reversal frequencies, is an appropriate measure of chemotaxis signaling in Helicobacter pylori..
    1. Biochemistry and Chemical Biology

    Fine interaction profiling of VemP and mechanisms responsible for its translocation-coupled arrest-cancelation

    Ryoji Miyazaki et al.
    Time-resolved and site-directed in vivo photo-crosslinking analysis of VemP allows identification of both cis- and trans-elements required for its regulated arrest-cancelation.
    1. Microbiology and Infectious Disease

    The flagellar motor of Vibrio alginolyticus undergoes major structural remodeling during rotational switching

    Brittany L Carroll et al.
    In situ structures of the flagellar motors genetically docked in CCW and CW rotational states reveal major rearrangement that facilitates rotational switch in Vibrio alginolyticus..
    1. Physics of Living Systems

    High-speed motility originates from cooperatively pushing and pulling flagella bundles in bilophotrichous bacteria

    Klaas Bente et al.
    Bacteria reach swimming speeds of several hundred body lengths per second and change direction in less than 5 ms by using coordinated flagella bundle agitation.
    1. Structural Biology and Molecular Biophysics

    Activation of a nucleotide-dependent RCK domain requires binding of a cation cofactor to a conserved site

    Celso M Teixeira-Duarte et al.
    Cations are essential cofactors in the ATP activation mechanism of the KtrAB cation channel and appear to be cofactors of many other nucleotide-dependent RCK domains.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structural insights into flagellar stator–rotor interactions

    Yunjie Chang et al.
    In situ structural analysis of bacterial flagellar motor in the Lyme disease spirochete reveals novel conformational change driven by proton motive force.
    1. Computational and Systems Biology

    Essential metabolism for a minimal cell

    Marian Breuer et al.
    A near-complete flux balance analysis model of a minimal cell demonstrates the high essentiality of its metabolic genes, agrees well with experimental essentiality data and suggests some further gene removals.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    The presence and absence of periplasmic rings in bacterial flagellar motors correlates with stator type

    Mohammed Kaplan et al.
    A correlation between the periplasmic embellishment of the flagellar motor and its stator system type is described, motors with dual H+-dependent stator systems have one periplasmic ring formed by MotY.
    1. Microbiology and Infectious Disease

    Quorum sensing controls Vibrio cholerae multicellular aggregate formation

    Matthew Jemielita et al.
    A quorum-sensing-controlled program of multicellularity, aggregation, is identified in Vibrio cholerae, which may be important for transitions between the marine niche and the human host.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Helical jackknives control the gates of the double-pore K+ uptake system KtrAB

    Marina Diskowski et al.
    The K(+) uptake system KtrAB is controlled by an allosteric mechanism entirely new for membrane channels, which operates the channel gate over a 35 Å distance.

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