51 results found
    1. Microbiology and Infectious Disease

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

    Leonor García-Bayona et al.
    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

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

    Johann Mignolet et al.
    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. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Gene network analysis identifies a central post-transcriptional regulator of cellular stress survival

    Matthew Tien et al.
    A gene network analysis approach reveals a conserved small regulatory RNA that is crucial for bacterial cell survival across distinct stress conditions.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Bacterial cell cycle control by citrate synthase independent of enzymatic activity

    Matthieu Bergé et al.
    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

    ParB spreading on DNA requires cytidine triphosphate in vitro

    Adam SB Jalal et al.
    A biochemical reconstitution shows that the accumulation of Caulobacter crescentus ParB on DNA requires cytidine triphosphate and a closed DNA substrate in vitro.
    1. Microbiology and Infectious Disease

    Cell cycle constraints on capsulation and bacteriophage susceptibility

    Silvia Ardissone et al.
    A multi-layered and conserved cell cycle mechanism prevents capsulation, long known as a bacterial virulence determinant, in G1-phase and concurrently licenses bacteriophage-mediated genetic exchange prior to entry into S-phase.
    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 et al.
    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 et al.
    A structural and biochemical approach shows that CTP binding and hydrolysis regulate nucleation, spreading, and recycling of a chromosome segregation protein ParB.
    1. Cell Biology
    2. Microbiology and Infectious Disease

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

    Hoong Chuin Lim et al.
    In vitro, in vivo and in silico evidence suggests that bacteria exploit intrinsic chromosomal fluctuations to achieve intracellular transport.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Coordination between nucleotide excision repair and specialized polymerase DnaE2 action enables DNA damage survival in non-replicating bacteria

    Asha Mary Joseph et al.
    Live-cell imaging shows that replication-independent specialized polymerase action is a consequence of lesion processing via NER and impacts cellular survival under stress outside replicative phases of the cell cycle.

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