Size-dependent Disaggregation of Stable Protein Aggregates by the DnaK Chaperone Machinery
نویسندگان
چکیده
منابع مشابه
Size-dependent disaggregation of stable protein aggregates by the DnaK chaperone machinery.
Classic in vitro studies show that the Hsp70 chaperone system from Escherichia coli (DnaK-DnaJ-GrpE, the DnaK system) can bind to proteins, prevent aggregation, and promote the correct refolding of chaperone-bound polypeptides into native proteins. However, little is known about how the DnaK system handles proteins that have already aggregated. In this study, glucose-6-phosphate dehydrogenase w...
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DafA is encoded by the dnaK operon of Thermus thermophilus and mediates the formation of a highly stable complex between the chaperone DnaK and its co-chaperone DnaJ under normal growth conditions. DafA(Tth) contains 87 amino acid residues and is the only member of the DnaK(Tth) chaperone system for which no corresponding protein has yet been identified in other organisms and whose particular f...
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Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, 4 Switzerland 5 Swiss Institute of Bioinformatics, Lausanne, Switzerland 6 Department of Genetics, Smurfit Institute of Genetics, University of Dublin, Trinity College Dublin, 7 Dublin, Ireland 8 Instituto de Biología Molecular y Celular de Plantas (CSIC-UPV), Valencia, Spain 9 Department of Biology, Univ...
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The ClpB/Hsp104 and Hsp70 classes of molecular chaperones use ATP hydrolysis to dissociate protein aggregates and complexes, and to move proteins through membranes. ClpB/Hsp104 are members of the AAA+ family of proteins which form ring-shaped hexamers. Loops lining the pore in the ring engage substrate proteins as extended polypeptides. Interdomain rotations and conformational changes in these ...
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The production of anti-drug antibodies can impact significantly upon the safety and efficacy of biotherapeutics. It is known that various factors, including aggregation and the presence of process-related impurities, can modify and augment the immunogenic potential of proteins. The purpose of the investigations reported here was to characterize in mice the influence of aggregation and host cell...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2000
ISSN: 0021-9258
DOI: 10.1074/jbc.m001293200