1,955 results found
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Intracellular complexities of acquiring a new enzymatic function revealed by mass-randomisation of active-site residues

    Kelsi R Hall et al.
    Evolving E. coli NfsA for enhanced chloramphenicol detoxification in the native host environment shows that eliminating substrate competition can occur rapidly, and be key to evolving a new enzymatic function.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Unfair competition governs the interaction of pCPI-17 with myosin phosphatase (PP1-MYPT1)

    Joshua J Filter et al.
    Unfair competition, in which a phosphatase and a phosphoprotein inhibitor/substrate mutually sequester each other from competing substrates and enzymes, is a conserved mechanism for the control of PPP family phosphatases.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Greatwall-phosphorylated Endosulfine is both an inhibitor and a substrate of PP2A-B55 heterotrimers

    Byron C Williams et al.
    The mechanism of inhibition by unfair competition is central to determining the protein phosphorylation states that govern cell cycle transitions between M phase and interphase.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    pH- and sodium-induced changes in a sodium/proton antiporter

    Cristina Paulino, Werner Kühlbrandt
    Sodium ions but not protons induce defined helix movements in a sodium/proton antiporter and suggest a mechanism for Na + binding and transport.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanistic basis of the inhibition of SLC11/NRAMP-mediated metal ion transport by bis-isothiourea substituted compounds

    Cristina Manatschal et al.
    The structural and mechanistic characterization of competitive inhibition of human DMT1 offers a promising route for the development of compounds for the treatment of iron overload disorders.
    1. Cell Biology
    2. Physics of Living Systems

    How cells determine the number of polarity sites

    Jian-geng Chiou et al.
    Minimal essential features of Rho GTPase systems are elucidated that regulate the number of distinct domains developed by a cell’s polarity machinery, which in turn governs cell shape.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    In vitro reconstitution of dynamically interacting integral membrane subunits of energy-coupling factor transporters

    Inda Setyawati et al.
    Integral membrane subunits of energy-coupling factor transporters associate with and dissociate from each other as part of the transport mechanism.
    1. Physics of Living Systems

    Symmetry breaking meets multisite modification

    Vaidhiswaran Ramesh, J Krishnan
    Network symmetry represents a new vantage point for dissecting complex information processing characteristics in multisite modification, and the breaking of symmetry can confer ordering of modification and absolute concentration robustness.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    tRNA ligase structure reveals kinetic competition between non-conventional mRNA splicing and mRNA decay

    Jirka Peschek, Peter Walter
    Interconnected RNA processing mechanisms ensure the fidelity of non-conventional mRNA splicing during the unfolded protein response.

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