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

    Resolving dual binding conformations of cellulosome cohesin-dockerin complexes using single-molecule force spectroscopy

    Markus A Jobst, Lukas F Milles ... Michael A Nash
    A single-molecule approach is able to discriminate the redundant binding conformations of cellulosomal dockerin based on differences in their mechanical properties.
    1. Structural Biology and Molecular Biophysics

    A conformational switch regulates the ubiquitin ligase HUWE1

    Bodo Sander, Wenshan Xu ... Sonja Lorenz
    The cancer-associated human ubiquitin ligase HUWE1 can adopt an auto-inhibited dimeric state, whose occupancy is regulated by competing intra- and intermolecular interactions of the dimerization region and by the tumor suppressor p14ARF.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Crystal structures of DNA polymerase I capture novel intermediates in the DNA synthesis pathway

    Nicholas Chim, Lynnette N Jackson ... John C Chaput
    Insight into the mechanism of DNA synthesis is provided by the crystal structures of DNA polymerase intermediates.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM reveals distinct conformations of E. coli ATP synthase on exposure to ATP

    Meghna Sobti, Robert Ishmukhametov ... Alastair G Stewart
    Cryo-EM studies reveal that incubation with ATP produces conformational intermediates of E. coli ATP synthase, in which the ε subunit is no longer in its autoinhibitory conformation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Large protein organelles form a new iron sequestration system with high storage capacity

    Tobias W Giessen, Benjamin J Orlando ... Pamela A Silver
    An alternative iron storage system based on a 9.6 megadalton microbial protein compartment is able to sequester and store large amounts of iron.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Analysis of the PcrA-RNA polymerase complex reveals a helicase interaction motif and a role for PcrA/UvrD helicase in the suppression of R-loops

    Inigo Urrutia-Irazabal, James R Ault ... Mark S Dillingham
    RNA polymerase recruits the PcrA DNA helicase via a conserved interaction motif in order to remove R-loops and prevent conflicts with replication.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    McsB forms a gated kinase chamber to mark aberrant bacterial proteins for degradation

    Bence Hajdusits, Marcin J Suskiewicz ... Tim Clausen
    The McsB kinase is critical for protein quality control in Gram-positive bacteria, assembling a gated phosphorylation chamber during heat-shock conditions to selectively mark misfolded proteins for degradation.
    1. Structural Biology and Molecular Biophysics

    pH-dependent 11° F1FO ATP synthase sub-steps reveal insight into the FO torque generating mechanism

    Seiga Yanagisawa, Wayne D Frasch
    Single-molecule F1FO studies show mutation-dependent pKa changes of both FO half-channels, and proton translocation-dependent 11° ATP synthase-direction sub-steps, which support a Grotthuss proton transfer-dependent two-step FO torque generating mechanism.
    1. Biochemistry and Chemical Biology

    Support Proteins: Getting bacterial cells into shape

    Mrinmayee Bapat, Vani Pande, Pananghat Gayathri
    The conformational state of a structural protein in bacteria can vary, depending on the concentration level of potassium ions or the nucleotide bound to it.
    Version of Record
    Insight
    1. Biochemistry and Chemical Biology

    On the role of nucleotides and lipids in the polymerization of the actin homolog MreB from a Gram-positive bacterium

    Wei Mao, Lars D Renner ... Rut Carballido-Lopez
    First 3D-structure and first observation of organized protofilaments of MreB from a Gram-positive bacterium, suggesting a model where ATP drives the formation of dynamic pairs of MreB protofilaments on a lipid surface.

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