14 results found
    1. Biophysics and Structural Biology
    2. Cell Biology

    Intraflagellar Transport: Trainspotting in a cilium

    Dhivya Kumar, Stephen M King
    A new imaging technique sheds light on how cilia regulate their length and growth.
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    1. Biophysics and Structural Biology
    2. Cell Biology

    Dynamics of the IFT machinery at the ciliary tip

    Alexander Chien et al.
    During intraflagellar transport (IFT), kinesin-II dissociates from IFT trains at the flagellar tip and its diffusion in flagella serves as a negative feedback mechanism that facilitates flagellar length control in Chlamydomonas.
    1. Human Biology and Medicine
    2. Neuroscience

    Selective and regulated trapping of nicotinic receptor weak base ligands and relevance to smoking cessation

    Anitha P Govind et al.
    The smoking cessation drug varenicline (Chantix) and other weak base ligands reduce a4b2-type nicotinic receptor (a4b2R) upregulation through slow intracellular release due to selective trapping in acidic vesicles that contain a4b2Rs.
    1. Biophysics and Structural Biology
    2. Computational and Systems Biology

    The selectivity of the Na+/K+-pump is controlled by binding site protonation and self-correcting occlusion

    Huan Rui et al.
    Computations based on detailed atomic models explain how the ATP-driven sodium-potassium pump avoids transporting the wrong type of ions in order to maintain the physiological concentration of sodium and potassium ions across the cell membrane.
    1. Biophysics and Structural Biology

    Structural basis for DNA 5´-end resection by RecJ

    Kaiying Cheng et al.
    A structural investigation reveals details of the mechanism by which the nuclease RecJ processes DNA ends to repair double strand breaks.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Redox signaling via the molecular chaperone BiP protects cells against endoplasmic reticulum-derived oxidative stress

    Jie Wang et al.
    Direct modification by endogenous peroxide of a conserved cysteine in the molecular chaperone BiP decouples its ATPase and peptide-binding activities, allowing for enhanced polypeptide holdase activity during oxidative stress.
    1. Biophysics and Structural Biology
    2. Neuroscience

    Optocontrol of glutamate receptor activity by single side-chain photoisomerization

    Viktoria Klippenstein et al.
    Introduction of single photoswitchable unnatural amino acid into a neuronal receptor provides reversible, rapid and robust control of its activity by light, representing an important contribution to the fast expanding field of optopharmacology.
    1. Biochemistry and Chemical Biology
    2. Biophysics and Structural Biology

    Structural basis of proton translocation and force generation in mitochondrial ATP synthase

    Niklas Klusch et al.
    Cryo-EM reveals atomic details of two membrane half-channels for translocation of protons that drive rotary catalysis in ATP synthase.
    1. Biochemistry and Chemical Biology
    2. Biophysics and Structural Biology

    Structure and conformational states of the bovine mitochondrial ATP synthase by cryo-EM

    Anna Zhou et al.
    Structural analysis of the ATP synthase – in combination with evolutionary covariance analysis – reveals the fold of the a subunit and shows that the enzyme can adopt several different conformations, which support the Brownian ratchet model for generating rotation.
    1. Neuroscience

    Measurements and models of electric fields in the in vivo human brain during transcranial electric stimulation

    Yu Huang et al.
    Direct in-vivo measurements in the human brain test validity of detailed computational models of trancranial electric stimulation and show that electric fields in the brain are weaker than currently assumed.

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