1,245 results found
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    The export receptor Crm1 forms a dimer to promote nuclear export of HIV RNA

    David S Booth et al.
    The nuclear export receptor Crm1 cooperatively binds its HIV Rev-RRE cargo as a dimer using a species-specific interface that supports viral replication by enhancing nuclear export of HIV RNA.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis for activation and non-canonical catalysis of the Rap GTPase activating protein domain of plexin

    Yuxiao Wang et al.
    The crystal structures of the intracellular part of the plexin receptor in the active dimer form, and its complex with a key downstream signalling protein Rap, provide insights into how plexin initiates a signalling cascade involved in axon guidance.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Transient kinetic studies of the antiviral Drosophila Dicer-2 reveal roles of ATP in self–nonself discrimination

    Raushan K Singh et al.
    A real-time, stopped-flow method, in combination with protein-induced fluorescence enhancement, Förster resonance energy transfer, and time-resolved fluorescence spectroscopy, reveals a kinetic framework for understanding Dicer as a complex molecular motor.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of Na+-dependent citrate transport from the structure of an asymmetrical CitS dimer

    David Wöhlert et al.
    The high-resolution x-ray structure of an asymmetrical SeCitS dimer, present in the inward- and outward-facing state, provides a complete mechanism of substrate and ion translocation in a sodium-dependent symporter.
    1. Biochemistry and Chemical Biology

    Collagen induces activation of DDR1 through lateral dimer association and phosphorylation between dimers

    Victoria Juskaite et al.
    Ligand binding induces DDR1 kinase activity through recruitment of DDR1 receptors into signalling clusters in which phosphorylation occurs across different dimers.
    1. Neuroscience

    Central Dicer-miR-103/107 controls developmental switch of POMC progenitors into NPY neurons and impacts glucose homeostasis

    Sophie Croizier et al.
    Loss miRNA maturation in proopiomelanocortin (POMC) neurons causes metabolic dysregulation and favors the differentiation of Pomc progenitors into neuropeptide Y neurons, a developmental process that appears to specifically involve miR-103/107.
    1. Cell Biology

    Unstructured regions in IRE1α specify BiP-mediated destabilisation of the luminal domain dimer and repression of the UPR

    Niko Amin-Wetzel et al.
    Client protein-driven reversal of endoplasmic reticulum chaperone (BiP) mediated-repression is revealed as a principal component of the regulation of the unfolded protein response transducer IRE1 in cells.
    1. Chromosomes and Gene Expression

    Crosstalk within a functional INO80 complex dimer regulates nucleosome sliding

    Oliver Willhoft et al.
    Regulation of the INO80 chromatin remodelling complex differs from those identified in other chromatin remodellers and involves a C-terminal domain of the Ino80 subunit.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    RNA-directed remodeling of the HIV-1 protein Rev orchestrates assembly of the Rev–Rev response element complex

    Bhargavi Jayaraman et al.
    A pliable hydrophobic interface in the HIV-1 Rev protein enables assembly of diverse oligomeric structures, guided by the RRE scaffold present in HIV-1 mRNAs.
    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.

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