72 results found
    1. Microbiology and Infectious Disease

    eDNA-stimulated cell dispersion from Caulobacter crescentus biofilms upon oxygen limitation is dependent on a toxin–antitoxin system

    Cecile Berne, Sébastien Zappa, Yves V Brun
    Genetic and microscopy analyses identify a programmed cell death mechanism that kills a cell subpopulation in a bacterial biofilm where oxygen is limiting, thereby promoting dispersion of newborn motile cells through the action of DNA released by dead cells.
    1. Microbiology and Infectious Disease

    Contact-dependent killing by Caulobacter crescentus via cell surface-associated, glycine zipper proteins

    Leonor García-Bayona, Monica S Guo, Michael T Laub
    Genetic, biochemical, and cell biological approaches reveal a new form of contact-dependent inhibition in bacteria involving bacteriocin-like proteins that aggregate on the surface of cells.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Evidence for a DNA-relay mechanism in ParABS-mediated chromosome segregation

    Hoong Chuin Lim, Ivan Vladimirovich Surovtsev ... Christine Jacobs-Wagner
    In vitro, in vivo and in silico evidence suggests that bacteria exploit intrinsic chromosomal fluctuations to achieve intracellular transport.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    The Lon protease temporally restricts polar cell differentiation events during the Caulobacter cell cycle

    Deike J Omnus, Matthias J Fink ... Kristina Jonas
    A proteomics-based approach identifies novel substrate proteins of the Lon protease in Caulobacter crescentus and reveals a critical role of Lon in regulating flagella assembly and stalk biogenesis during the cell cycle.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Bacterial cell cycle control by citrate synthase independent of enzymatic activity

    Matthieu Bergé, Julian Pezzatti ... Patrick H Viollier
    A key enzyme of central energy metabolism, citrate synthase, regulates bacterial cell cycle progression at a very specific stage (S-phase) and independently of its enzymatic activity.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    A nascent polypeptide sequence modulates DnaA translation elongation in response to nutrient availability

    Michele Felletti, Cédric Romilly ... Kristina Jonas
    Specific amino acids in the N-terminus of the replication initiator protein DnaA inhibit translation elongation upon carbon starvation, illustrating that the identity of the N-terminal amino acids of a protein can modulate protein synthesis yield under changing conditions.
    1. Chromosomes and Gene Expression

    A CTP-dependent gating mechanism enables ParB spreading on DNA

    Adam SB Jalal, Ngat T Tran ... Tung BK Le
    A structural and biochemical approach shows that CTP binding and hydrolysis regulate nucleation, spreading, and recycling of a chromosome segregation protein ParB.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    ParB spreading on DNA requires cytidine triphosphate in vitro

    Adam SB Jalal, Ngat T Tran, Tung BK Le
    A biochemical reconstitution shows that the accumulation of Caulobacter crescentus ParB on DNA requires cytidine triphosphate and a closed DNA substrate in vitro.
    1. Cell Biology

    Functional dichotomy and distinct nanoscale assemblies of a cell cycle-controlled bipolar zinc-finger regulator

    Johann Mignolet, Seamus Holden ... Patrick H Viollier
    Forward genetics and super-resolution microscopy identifies ZitP as a conserved multifunctional regulator that accumulates at both cell extremities in distinct macromolecular structures to perform different functions in the asymmetric model bacterium Caulobacter crescentus.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Architecture of the ring formed by the tubulin homologue FtsZ in bacterial cell division

    Piotr Szwedziak, Qing Wang ... Jan Löwe
    The architecture of the bacterial cytokinetic ring in cells and in artificial liposome reconstitutions has been described using electron microscopy, leading to a mechanism of constriction.

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