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groL | Chaperonin, 60 kDa, GrpEL, putative; Prevents misfolding and promotes the refolding and proper assembly of unfolded polypeptides generated under stress conditions. (538 aa) | ||||
groS | Chaperonin, 10 kDa, GroES, putative; Binds to Cpn60 in the presence of Mg-ATP and suppresses the ATPase activity of the latter. (94 aa) | ||||
dnaJ | DnaJ protein; Participates actively in the response to hyperosmotic and heat shock by preventing the aggregation of stress-denatured proteins and by disaggregating proteins, also in an autonomous, DnaK-independent fashion. Unfolded proteins bind initially to DnaJ; upon interaction with the DnaJ-bound protein, DnaK hydrolyzes its bound ATP, resulting in the formation of a stable complex. GrpE releases ADP from DnaK; ATP binding to DnaK triggers the release of the substrate protein, thus completing the reaction cycle. Several rounds of ATP-dependent interactions between DnaJ, DnaK and Gr [...] (379 aa) |