82 results found
    1. Biochemistry and Chemical Biology

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

    Agnieszka Kłosowska, Tomasz Chamera, Krzysztof Liberek
    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

    Evolution of an intricate J-protein network driving protein disaggregation in eukaryotes

    Nadinath B Nillegoda, Antonia Stank ... Bernd Bukau
    The emergence of complementary electrostatic potentials after the prokaryotic-to-eukaryotic split drives physical and functional cooperation between canonical class A and class B J-proteins to boost protein disaggregation.
    1. Biochemistry and Chemical Biology

    Early steps of protein disaggregation by Hsp70 chaperone and class B J-domain proteins are shaped by Hsp110

    Wiktoria Sztangierska, Hubert Wyszkowski ... Agnieszka Kłosowska
    Recovery of proteins from aggregates by Hsp70 is boosted by the Hsp110 co-chaperone, which promotes abundant Hsp70 recruitment to aggregates and supports initial aggregate remodelling into small assemblies.
    1. Biochemistry and Chemical Biology

    The Listeria monocytogenes persistence factor ClpL is a potent stand-alone disaggregase

    Valentin Bohl, Nele Merret Hollmann ... Axel Mogk
    The bacterial AAA+ chaperone ClpL recognizes aggregated proteins via multiple contacts of its unique N-terminal domain and refolds them with high efficiency providing superior heat resistance.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Promiscuous interactions and protein disaggregases determine the material state of stress-inducible RNP granules

    Sonja Kroschwald, Shovamayee Maharana ... Simon Alberti
    A comparison in yeast and human cells reveals a remarkable variability in the properties of RNP granules and highlights a key role for protein disaggregation machines in regulating RNP granule assembly.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Head-to-tail interactions of the coiled-coil domains regulate ClpB activity and cooperation with Hsp70 in protein disaggregation

    Marta Carroni, Eva Kummer ... Helen R Saibil
    Overcoming image-processing problems in the analysis of the ClpB chaperone provides a new structural model and regulatory mechanism, based on clear density for the coiled-coil domain and supported by various biochemical data.
    1. Biochemistry and Chemical Biology

    Skd3 (human ClpB) is a potent mitochondrial protein disaggregase that is inactivated by 3-methylglutaconic aciduria-linked mutations

    Ryan R Cupo, James Shorter
    Skd3 (human ClpB) is a potent ATP-dependent mitochondrial protein disaggregase that is activated by the rhomboid protease, PARL, and inactivated by MGCA7-linked mutations.
    1. Cell Biology

    Stapled Golgi cisternae remain in place as cargo passes through the stack

    Gregory Lavieu, Hong Zheng, James E Rothman
    The cisternae of the Golgi contain two functionally distinct domains: the central areas, which remain stationary, and the edges or rims, which are mobile.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis for the disaggregase activity and regulation of Hsp104

    Alexander Heuck, Sonja Schitter-Sollner ... Tim Clausen
    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

    Single turnover transient state kinetics reveals processive protein unfolding catalyzed by Escherichia coli ClpB

    Jaskamaljot Kaur Banwait, Liana Islam, Aaron L Lucius
    Development of sequential mixing, single turnover stopped-flow approach reveals processive protein unfolding catalyzed by Escherichia coli ClpB.

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