111 results found
    1. Structural Biology and Molecular Biophysics

    HDX-MS reveals nucleotide-dependent, anti-correlated opening and closure of SecA and SecY channels of the bacterial translocon

    Zainab Ahdash et al.
    Hydrogen-deuterium exchange mass spectrometry reveals nucleotide-driven conformational regulation of Sec protein-channel to help impose directionality for protein transport through the Sec complex.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ric-8A, a G protein chaperone with nucleotide exchange activity induces long-range secondary structure changes in Gα

    Ravi Kant et al.
    Hydrogen-Deuterium exchange experiments show that Ric-8A induces similar dynamic changes in the structure of Gα as G protein-coupled receptors, yet protects a larger surface of the nucleotide-binding Ras domain.
    1. Structural Biology and Molecular Biophysics

    Differential impact of BTK active site inhibitors on the conformational state of full-length BTK

    Raji E Joseph et al.
    The first-in-class kinase inhibitor, Ibrutinib, destabilizes its autoinhibited Bruton’s tyrosine kinase (BTK) target, and a remote resistance mutation causes global structural changes that activate BTK catalytic activity.
    1. Structural Biology and Molecular Biophysics

    Auto-regulation of Rab5 GEF activity in Rabex5 by allosteric structural changes, catalytic core dynamics and ubiquitin binding

    Janelle Lauer et al.
    Understanding the complex auto-regulatory mechanisms for guanine nucleotide exchange factors is critically important for fully appreciating the layers of control for small GTPases.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The autophagy adaptor NDP52 and the FIP200 coiled-coil allosterically activate ULK1 complex membrane recruitment

    Xiaoshan Shi et al.
    Hydrogen-deuterium exchange, electron microscopy, and vesicle reconstitution show how binding of the autophagy adaptor NDP52 to the FIP200 subunit of the ULK1 complex triggers membrane binding in autophagy.
    1. Immunology and Inflammation

    Cell-density independent increased lymphocyte production and loss rates post-autologous HSCT

    Mariona Baliu-Piqué et al.
    Altered lymphocyte dynamics after hematopoietic stem cell transplantation cannot solely be explained by low lymphocyte numbers.
    1. Biochemistry and Chemical Biology

    Flux analysis of cholesterol biosynthesis in vivo reveals multiple tissue and cell-type specific pathways

    Matthew A Mitsche et al.
    Cells use two interdigitated biosynthetic pathways that can be regulated independently to produce diverse bioactive sterols.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    SARS-CoV-2 S protein:ACE2 interaction reveals novel allosteric targets

    Palur V Raghuvamsi et al.
    SARS-CoV-2 spike protein binding to receptor angiotensin-converting enzyme 2 allosterically enhances furin proteolysis at distal S1/S2 cleavage sites.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Fusion surface structure, function, and dynamics of gamete fusogen HAP2

    Juan Feng et al.
    Structure, dynamics, and mutation of a gamete fusion protein and comparisons to viral homologues suggest that after trimerization the domain bearing the membrane-inserting fusion loops can pivot with respect to the trimer 3-fold axis.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    The Cac1 subunit of histone chaperone CAF-1 organizes CAF-1-H3/H4 architecture and tetramerizes histones

    Wallace H Liu et al.
    Biophysical and biochemical approaches reveal new insights into the architecture of CAF-1 and the unique mechanism by which CAF-1 tetramerizes histones H3/H4.

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