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    1. Biochemistry and Chemical Biology

    Mitochondrial ClpX activates an essential biosynthetic enzyme through partial unfolding

    Julia R Kardon et al.
    The mitochondrial protein unfoldase ClpX activates the first enzyme in heme biosynthesis, ALAS, by targeted unfolding that gates access of cofactor to the ALAS active site.
    1. Chromosomes and Gene Expression

    MukB ATPases are regulated independently by the N- and C-terminal domains of MukF kleisin

    Katarzyna Zawadzka et al.
    In Escherichia coli structural maintenance of chromosomes (SMC) complex, MukBEF, a dimeric MukF kleisin binds and activates MukB SMC ATPases through two independent interfaces provided by distinct MukF N- and C-terminal domains.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An unfolded protein-induced conformational switch activates mammalian IRE1

    G Elif Karagöz et al.
    ER-stress sensing mechanism of the unfolded protein response sensor/transducer IRE1 is conserved from yeast to mammals, where in mammals, unfolded protein binding to IRE1's ER lumenal domain is coupled to its oligomerization and activation through an allosteric conformational change.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Single-molecule studies contrast ordered DNA replication with stochastic translesion synthesis

    Gengjing Zhao et al.
    Competing DNA polymerases at the DNA sliding clamp are revealed by single-molecule co-localization studies.
    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.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular mechanism of thermosensory function of human heat shock transcription factor Hsf1

    Nikolai Hentze et al.
    Heat-induced local unfolding allows Hsf1 to form trimers and bind to DNA, which depends on Hsf1 concentration and is promoted, not inhibited, by Hsp90.
    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. Cell Biology
    2. Developmental Biology

    The novel SH3 domain protein Dlish/CG10933 mediates fat signaling in Drosophila by binding and regulating Dachs

    Yifei Zhang et al.
    The Fat-regulated scaffolding protein Dlish controls the activity, levels and cortical localization of Warts-inhibiting myosin Dachs by linking Dachs to a critical Dachs regulator, the DHHC palmitoyltransferase Approximated, and to the Fat-mediated regulation of Dachs stability.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Aven recognition of RNA G-quadruplexes regulates translation of the mixed lineage leukemia protooncogenes

    Palaniraja Thandapani et al.
    Arginine methylation regulates mRNA translation of key protooncogenes via an RGG/RG motif-containing protein called Aven.