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.
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.
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.
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.
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.
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.
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.
The cisternae of the Golgi contain two functionally distinct domains: the central areas, which remain stationary, and the edges or rims, which are mobile.