2,719 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A putative ATPase mediates RNA transcription and capping in a dsRNA virus

    Xuekui Yu, Jiansen Jiang ... Z Hong Zhou
    Atomic structures suggest a novel mechanism for the regulation of mRNA transcription and capping in dsRNA viruses.
    1. Evolutionary Biology

    Evolution of cation binding in the active sites of P-loop nucleoside triphosphatases in relation to the basic catalytic mechanism

    Daria N Shalaeva, Dmitry A Cherepanov ... Armen Y Mulkidjanian
    In potassium-dependent NTPases, insertion of the activating potassium ion into the active site leads to rotation of the gamma-phosphate yielding a near-eclipsed, catalytically productive conformation of the triphosphate chain.
    1. Biochemistry and Chemical Biology

    The GTPase Nog1 co-ordinates the assembly, maturation and quality control of distant ribosomal functional centers

    Purnima Klingauf-Nerurkar, Ludovic C Gillet ... Vikram G Panse
    The GTPase Nog1 orchestrates stalk assembly, peptidyl transferase centre maturation and polypeptide exit tunnel quality control.
    1. Cell Biology

    In vivo identification of GTPase interactors by mitochondrial relocalization and proximity biotinylation

    Alison K Gillingham, Jessie Bertram ... Sean Munro
    Relocation of Rab, Ras and Rho family GTPases to the surface of mitochondria enables efficient identification of their effectors, exchange factors and GAPs by proximity biotinylation.
    1. Genetics and Genomics

    miR-1 coordinately regulates lysosomal v-ATPase and biogenesis to impact proteotoxicity and muscle function during aging

    Isabelle Schiffer, Birgit Gerisch ... Adam Antebi
    Coordinate control of lysosomal v-ATPase subunits and biogenesis factor TFEB by miR-1 identifies a key regulatory axis with strong links to age-related proteotoxic disease.
    1. Structural Biology and Molecular Biophysics

    A putative structural mechanism underlying the antithetic effect of homologous RND1 and RhoD GTPases in mammalian plexin regulation

    Yanyan Liu, Pu Ke ... Yibing Shan
    Small Rho GTPases confer up- and downregulation in mammalian plexin signaling by differential interactions with cell membrane.
    1. Structural Biology and Molecular Biophysics

    Mechanical inhibition of isolated Vo from V/A-ATPase for proton conductance

    Jun-ichi Kishikawa, Atsuko Nakanishi ... Ken Yokoyama
    Cryo-EM structures of rotary V-ATPase reveal the ON-OFF switching mechanism of H+ translocation in the Vo membrane domain.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure of Vps4 with circular peptides and implications for translocation of two polypeptide chains by AAA+ ATPases

    Han Han, James M Fulcher ... Christopher P Hill
    Structural and biochemical studies indicate that AAA+ ATPase employ a general mechanism to translocate a variety of substrates, including extended polypeptides, hairpins, crosslinked chains, and chains conjugated to other molecules.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Reformulation of an extant ATPase active site to mimic ancestral GTPase activity reveals a nucleotide base requirement for function

    Taylor B Updegrove, Jailynn Harke ... Kumaran S Ramamurthi
    Reengineering the nucleotide-binding pocket of an extant ATPase to restore ancestral GTPase activity revealed an ATP-dependent intermediate required for function and suggested why the protein evolved to use ATP.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and ion-release mechanism of PIB-4-type ATPases

    Christina Grønberg, Qiaoxia Hu ... Pontus Gourdon
    A biochemical approach unveils the overall shape of a subclass of heavy-metal transporting pumps, thereby shedding light on principle molecular determinants linked to the transport mechanism of these elusive machines, information that is critical well beyond basic science.

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