17 results found
    1. Microbiology and Infectious Disease

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

    Brittany L Carroll, Tatsuro Nishikino ... Jun Liu
    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. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Length-dependent flagellar growth of Vibrio alginolyticus revealed by real time fluorescent imaging

    Meiting Chen, Ziyi Zhao ... Chien-Jung Lo
    The length-dependent growth rate of bacterial flagellar filament is determined by the flagellin loading speed, loading strength and its diffusion process.
    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, Ahmad Reza Mehdipour ... Inga Hänelt
    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.
    1. Biochemistry and Chemical Biology

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

    Ryoji Miyazaki, Yoshinori Akiyama, Hiroyuki Mori
    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. Ecology
    2. Physics of Living Systems

    Multiplexed microfluidic screening of bacterial chemotaxis

    Michael R Stehnach, Richard J Henshaw ... Jeffrey S Guasto
    A multiplexed microfluidic device was developed to facilitate high-throughput screening of bacterial chemotaxis on a single chip and demonstrated across a range of microbes, chemostimulants, and chemical gradient conditions.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The force-sensing peptide VemP employs extreme compaction and secondary structure formation to induce ribosomal stalling

    Ting Su, Jingdong Cheng ... Roland Beckmann
    The structure of the VemP-stalled ribosome reveals a helix-double turn-helix conformation of the nascent chain within the ribosomal tunnel, illustrating how secondary structure formation directly at the peptidyltransferase center of the ribosome can induce translational arrest.
    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, Debnath Ghosal ... Grant J Jensen
    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.
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    1. Chromosomes and Gene Expression

    A simple mechanism for integration of quorum sensing and cAMP signalling in Vibrio cholerae

    Lucas M Walker, James RJ Haycocks ... David C Grainger
    Overlapping DNA-binding specificity allows global transcription factors to cooperatively bind the same DNA sites and integrate two signals in the control of gene expression.
    1. Physics of Living Systems

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

    Jyot D Antani, Anita X Sumali ... Pushkar P Lele
    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. Microbiology and Infectious Disease

    Quorum sensing control of Type VI secretion factors restricts the proliferation of quorum-sensing mutants

    Charlotte Majerczyk, Emily Schneider, E Peter Greenberg
    Quorum-sensing control of Burkholderia thailandensis toxin and immunity pairs serves to police quorum-sensing mutants and may represent a general strategy whereby cooperators can police mutants.

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