4,338 results found
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Initiation of chromosome replication controls both division and replication cycles in E. coli through a double-adder mechanism

    Guillaume Witz et al.
    Single-cell measurements combined with a new statistical framework for discriminating between models of cell cycle regulation show that chromosome initiation controls the E. coli cell cycle via two adder mechanisms.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Aurkb/PP1-mediated resetting of Oct4 during the cell cycle determines the identity of embryonic stem cells

    Jihoon Shin et al.
    The regulation of the core transcription factor Oct4 by the Aurkb-PP1 axis links the cell cycle to pluripotency programs in embryonic stem cells.
    1. Cell Biology

    Impaired skeletal muscle mitochondrial pyruvate uptake rewires glucose metabolism to drive whole-body leanness

    Arpit Sharma et al.
    Skeletal muscle mitochondrial pyruvate carrier disruption increases muscle fatty acid oxidation and systemic glucose turnover that drive whole-body leanness.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB

    Thomas Eicher et al.
    A transport mechanism is uncovered in the major drug-efflux system in E. coli involving two remote alternating-access conformational cycles, which could provide the basis for the development of allosteric inhibitors against multidrug resistance.
    1. Developmental Biology
    2. Microbiology and Infectious Disease

    Cytoplasmic retention and degradation of a mitotic inducer enable plant infection by a pathogenic fungus

    Paola Bardetti et al.
    Degradation of a mitotic inducer coordinates the transition of two successive cell cycle arrests during the infective process of a plant pathogenic fungus.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Punctuated evolution and transitional hybrid network in an ancestral cell cycle of fungi

    Edgar M Medina et al.
    Cell cycle network evolution in a fungal ancestor was punctuated by the arrival of a viral DNA-binding protein that was permanently incorporated into the regulatory network controlling cell cycle entry.
    1. Plant Biology

    A regulatory module controlling stress-induced cell cycle arrest in Arabidopsis

    Naoki Takahashi et al.
    Arabidopsis deploys the core signalling module that perceives distinct stress signals, such as DNA damage and heat stresses, and represses G2/M-specific genes, thereby causing cell cycle arrest.
    1. Computational and Systems Biology

    Design principles of autocatalytic cycles constrain enzyme kinetics and force low substrate saturation at flux branch points

    Uri Barenholz et al.
    The stability of metabolic autocatalytic cycles that are widespread in central metabolism limits the affinities of enzymes at flux branch points and explains excess expression of these enzymes.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    The cyanobacterial circadian clock follows midday in vivo and in vitro

    Eugene Leypunskiy et al.
    The cyanobacterial core clock tracks midday regardless of day length, which can be understood in terms of a model for how the environment alters the clock limit cycle.
    1. Structural Biology and Molecular Biophysics

    Mechanisms of ribosome stalling by SecM at multiple elongation steps

    Jun Zhang et al.
    Nascent regulatory peptides tune the translation rate through a continuous, dynamic reshaping of the functional center of the ribosome.

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