985 results found
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Dynamic Na+/H+ exchanger 1 (NHE1) – calmodulin complexes of varying stoichiometry and structure regulate Ca2+-dependent NHE1 activation

    Lise M Sjøgaard-Frich et al.
    NHE1-CaM complexes of multiple stoichiometries regulate cellular Ca2+-dependent NHE1 activity and can contribute to NHE1 dimerization, the latter shown by the NMR structure of CaM linking two NHE1 cytosolic tails.
    1. Cancer Biology

    Acid-base transporters and pH dynamics in human breast carcinomas predict proliferative activity, metastasis, and survival

    Nicolai J Toft et al.
    Cellular acidity, capacity for net acid extrusion, and expression of acid-base transporters in human breast carcinomas independently predict variation in proliferative activity, lymph node metastasis, and patient survival.
    1. Structural Biology and Molecular Biophysics

    Structure and mechanism of the Mrp complex, an ancient cation/proton antiporter

    Julia Steiner, Leonid Sazanov
    Structure of the Mrp antiporter, an ancestor of respiratory complex I, suggests a mechanism of coupling between cation and proton translocation, applicable to a large family of related membrane proteins.
    1. Developmental Biology

    Calcium handling precedes cardiac differentiation to initiate the first heartbeat

    Richard CV Tyser et al.
    High-resolution live imaging reveals how and when the mouse heart first starts to beat during development and how the onset of beating impacts on heart muscle cell maturation and heart formation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and transport mechanism of the sodium/proton antiporter MjNhaP1

    Cristina Paulino et al.
    The inward-open and outward-open structures of MjNhaP1 explain the mechanism of electroneutral sodium-proton antiport across the cell membrane.
    1. Structural Biology and Molecular Biophysics
    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. Structural Biology and Molecular Biophysics

    Structural insights into sodium transport by the oxaloacetate decarboxylase sodium pump

    Xin Xu et al.
    The structure of the membrane-integrated components of a unique substrate decarboxylation-driven primary-active sodium pump provides insights into its transport mechanism.
    1. Biochemistry and Chemical Biology

    Gq activity- and β-arrestin-1 scaffolding-mediated ADGRG2/CFTR coupling are required for male fertility

    Dao-Lai Zhang et al.
    ADGRG2, an orphan GPCR, when coupled to CFTR via a regional Gq signaling on the apical membrane, acts to regulate efferent duct fluid reabsorption making it essential for male fertility.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and substrate ion binding in the sodium/proton antiporter PaNhaP

    David Wöhlert et al.
    The X-ray structure of the PaNhaP provides a unique view of substrate-ion binding and release in electroneutral sodium/proton antiporters.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Dynamic change of electrostatic field in TMEM16F permeation pathway shifts its ion selectivity

    Wenlei Ye et al.
    TMEM16F shifts its ion selectivity in response to change of intracellular Ca2+, membrane potential and ionic strength.

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