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    1. Evolutionary Biology

    Molecular function limits divergent protein evolution on planetary timescales

    Mariam M Konaté et al.
    Orthologous proteins that continuously maintain the same molecular function do not usually diverge beyond a certain level of sequence and structural similarity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structures in multiple conformations reveal distinct transition metal and proton pathways in an Nramp transporter

    Aaron T Bozzi et al.
    Nramp-family transporters adapt a common fold to a novel mechanism in which the spatial and temporal separation of like-charge transition metal and proton co-substrates circumvents the expected electrostatic repulsion.
    1. Structural Biology and Molecular Biophysics

    Dissection of the interaction between the intrinsically disordered YAP protein and the transcription factor TEAD

    Yannick Mesrouze et al.
    A structure-function analysis of the YAP:TEAD interaction permits a thermodynamic mapping of this interface.
    1. Physics of Living Systems
    2. Cell Biology

    Side-binding proteins modulate actin filament dynamics

    Alvaro H Crevenna et al.
    The kinetics of actin polymerization are strongly influenced by the binding of proteins to the lateral filament surface.
    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

    Calibration and analysis of genome-based models for microbial ecology

    Stilianos Louca, Michael Doebeli
    A novel computation tool for microbial community modeling predicts the evolution and diversification of E. coli in laboratory evolution experiments and gives insight into the underlying metabolic processes.
    1. Structural Biology and Molecular Biophysics

    Mutational scanning reveals the determinants of protein insertion and association energetics in the plasma membrane

    Assaf Elazar et al.
    Deep sequencing analysis quantifies the hydrophobicity of the plasma membrane and provides restraints for structure modeling of receptor homodimers to atomic precision.
    1. Cell Biology

    Spatial quality control bypasses cell-based limitations on proteostasis to promote prion curing

    Courtney L Klaips et al.
    Cell division imposes a limit on proteostasis capacity by reducing chaperone accumulation, but chaperone-substrate interactions reverse these events to allow clearance of even chronically misfolded protein amyloids.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Three-color single molecule imaging shows WASP detachment from Arp2/3 complex triggers actin filament branch formation

    Benjamin A Smith et al.
    New insights into the mechanism responsible for the nucleation of branches on networks of actin filaments shed light on a process that is essential for eukaryotic cell motility and endocytosis.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Nup98 FG domains from diverse species spontaneously phase-separate into particles with nuclear pore-like permselectivity

    Hermann Broder Schmidt, Dirk Görlich
    How nuclear pore complexes establish their permeability barrier has been a long-standing question; now, this process can be reconstituted by a surprisingly simple and rapid self-assembly of Nup98 FG domains into selective FG phases.