101 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Multivalency of NDC80 in the outer kinetochore is essential to track shortening microtubules and generate forces

    Vladimir A Volkov et al.
    Multiple NDC80 complexes in the outer kinetochore cooperate to bind the ends of depolymerizing microtubules and harness their power stroke.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Relief of autoinhibition by conformational switch explains enzyme activation by a catalytically dead paralog

    Oleg A Volkov et al.
    A catalytically dead paralog activates its cognate enzyme through an allosteric mechanism that combined structural and phylogenomic analysis indicates arose through acquisition of a dimerization domain, suggesting a general model for how complex allostery evolves.
    1. Physics of Living Systems
    2. Cell Biology

    Flagellar synchronization through direct hydrodynamic interactions

    Douglas R Brumley et al.
    A combination of experiment and theory shows that pairs of eukaryotic flagella can achieve robust synchronization solely through the action of the fluid that surrounds them.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of the Ska-Ndc80 interaction and their influence on microtubule tracking and force-coupling

    Pim J Huis in 't Veld et al.
    Binding of two macromolecular complexes allows kinetochores to capture force produced by the depolymerising ends of microtubules, allowing chromosomes to be transmitted from a mother cell to its two daughters.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Flagellar Beating: Row with the flow

    Benjamin M Friedrich, Ingmar H Riedel-Kruse
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    1. Evolutionary Biology

    Metabolic co-dependence drives the evolutionarily ancient Hydra–Chlorella symbiosis

    Mayuko Hamada et al.
    The symbiotic relationship between Hydra and Chlorella is driven by metabolic co-dependence and characterized by changes in the photobiont genome in terms of lack of genes essential in free-living algae.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Direct measurement of conformational strain energy in protofilaments curling outward from disassembling microtubule tips

    Jonathan W Driver et al.
    The protofilaments that curl outward from a disassembling microtubule tip carry a large amount of strain energy and they can drive movement with an efficiency similar to conventional motor proteins.
    1. Immunology and Inflammation

    Composition and structure of synaptic ectosomes exporting antigen receptor linked to functional CD40 ligand from helper T cells

    David G Saliba et al.
    TCR and CD40L microclusters are linked in synaptic ectosomes (extracellular vesicles) and released in the immunological synapse by helper T cells and induce dendritic cell maturation and cytokine production.
    1. Neuroscience

    Catecholaminergic challenge uncovers distinct Pavlovian and instrumental mechanisms of motivated (in)action

    Jennifer C Swart et al.
    Motivational coupling of action to reward and inhibition to punishment is subserved by dissociable learning and choice processes, and is modulated by dopamine/noradrenaline transporter blockade.
    1. Structural Biology and Molecular Biophysics

    Structural basis of interprotein electron transfer in bacterial sulfite oxidation

    Aaron P McGrath et al.
    A structural and functional analysis of the electron transfer complex between a sulfite oxidase and its redox protein partner reveals an elegant compromise between the requirements for fast and efficient electron transfer and reaction specificity.

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