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    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 et al.
    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. Biochemistry and Chemical Biology

    Adenosine diphosphate restricts the protein remodeling activity of the Hsp104 chaperone to Hsp70 assisted disaggregation

    Agnieszka Kłosowska et al.
    Hsp70 chaperone provides Hsp104 with high efficiency in disaggregation and specificity towards aggregated substrates at the, otherwise limiting, cellular concentrations of adenine nucleotides.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    PGAM5 promotes lasting FoxO activation after developmental mitochondrial stress and extends lifespan in Drosophila

    Martin Borch Jensen et al.
    A signaling pathway involving PGAM5, ASK1 and JNK induces persistent FoxO activation, chaperone expression and lifespan extension following developmental mitochondrial stress, which can be blocked by mTOR signaling through GCN-2.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Bacterial cell cycle control by citrate synthase independent of enzymatic activity

    Matthieu Bergé et al.
    A key enzyme of central energy metabolism, citrate synthase, regulates bacterial cell cycle progression at a very specific stage (S-phase) and independently of its enzymatic activity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Target DNA bending by the Mu transpososome promotes careful transposition and prevents its reversal

    James R Fuller, Phoebe A Rice
    Biochemical data demonstrate that the conformation of the target site DNA can dramatically modulate the kinetics and directionality of the otherwise isoenergetic transposition reaction of DDE transposases.
    1. Structural Biology and Molecular Biophysics

    Structure of the AAA protein Msp1 reveals mechanism of mislocalized membrane protein extraction

    Lan Wang et al.
    Msp1 recruits substrates at the open seam of the spiral oligomer and extracts them with functionally adapted elements.
    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 et al.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    How lamina-associated polypeptide 1 (LAP1) activates Torsin

    Brian A Sosa et al.
    LAP1 adopts an AAA+ like fold that, while unable to bind nucleotide, can enhance ATPase activity in the neighboring TorsinA protomer in an unusual heterohexameric ring, via an arginine finger.
    1. Microbiology and Infectious Disease

    Loss of N1-methylation of G37 in tRNA induces ribosome stalling and reprograms gene expression

    Isao Masuda et al.
    Biochemical and genome-wide analysis demonstrates that m1G37 is important for tRNA aminoacylation and for the entire elongation cycle of protein synthesis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis for the disaggregase activity and regulation of Hsp104

    Alexander Heuck et al.
    Protein disaggregases employ two mechanically-linked ATPase rings that are under steric control by a wrapped-around coiled-coil belt.