GrpE protein; Participates actively in the response to hyperosmotic and heat shock by preventing the aggregation of stress-denatured proteins, in association with DnaK and GrpE. It is the nucleotide exchange factor for DnaK and may function as a thermosensor. 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 i [...]

Chaperone protein DnaK; Acts as a chaperone; Belongs to the heat shock protein 70 family.

Chaperone protein DnaK; Acts as a chaperone; Belongs to the heat shock protein 70 family.

ATP-binding region ATPase domain protein; InterPro IPR003594; KEGG: sfu:Sfum_3853 hypothetical protein; PFAM: ATP-binding region ATPase domain protein; SPTR: A0LQ20 Putative uncharacterized protein; PFAM: Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase.

Chaperone protein DnaJ; 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, D [...]

KEGG: gvi:glr2966 hypothetical protein; SPTR: Q7NCL2 Glr2966 protein.

COGs: COG0484 DnaJ-class molecular chaperone with C-terminal Zn finger domain; InterProIPR001623:IPR002939:IPR008971:IPR018253:IPR 003095; KEGG: sat:SYN_00894 chaperone protein; PFAM: chaperone DnaJ domain protein; heat shock protein DnaJ domain protein; SMART: heat shock protein DnaJ domain protein; SPTR: Q2LTT1 Chaperone protein; PFAM: DnaJ domain; DnaJ C terminal region.

20S proteasome A and B subunits; Protease subunit of a proteasome-like degradation complex believed to be a general protein degrading machinery.

Heat shock protein HslVU, ATPase subunit HslU; ATPase subunit of a proteasome-like degradation complex; this subunit has chaperone activity. The binding of ATP and its subsequent hydrolysis by HslU are essential for unfolding of protein substrates subsequently hydrolyzed by HslV. HslU recognizes the N-terminal part of its protein substrates and unfolds these before they are guided to HslV for hydrolysis.