2v7y | pdb_00002v7y

CRYSTAL STRUCTURE OF THE MOLECULAR CHAPERONE DNAK FROM GEOBACILLUS KAUSTOPHILUS HTA426 IN POST-ATP HYDROLYSIS STATE

spinqualitylabelsall models 2v7y, resolution 2.37Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2v7y is a 1 chain structure with sequence from Geoka. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ADP, MG, PO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [DNAK_GEOKA] Acts as a chaperone (By similarity). Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The 70-kDa heat shock proteins (Hsp70s) are highly conserved ATP-dependent molecular chaperones composed of an N-terminal nucleotide binding domain (NBD) and a C-terminal protein substrate binding domain (SBD) in a bilobate structure. Interdomain communication and nucleotide-dependent structural motions are critical for Hsp70 chaperone functions. Our understanding of these functions remains elusive due to insufficient structural information on intact Hsp70s that represent the different states of the chaperone cycle. We report here the crystal structures of DnaK from Geobacillus kaustophilus HTA426 bound with ADP-Mg(2+)-P(i) at 2.37A and the 70-kDa heat shock cognate protein from Rattus norvegicus bound with ADP-P(i) at 3.5A(.) The NBD and SBD in these structures are significantly separated from each other, and they might depict the ADP-bound conformation. Moreover, a Trp reporter was introduced at the potential interface region between NBD and the interdomain linker of GkDnaK to probe environmental changes. Results from fluorescence measurements support the notion that substrate binding enhances the domain-disjoining behavior of Hsp70 chaperones. Crystal structures of the 70-kDa heat shock proteins in domain disjoining conformation.,Chang YW, Sun YJ, Wang C, Hsiao CD J Biol Chem. 2008 May 30;283(22):15502-11. Epub 2008 Apr 8. PMID:18400763 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Heat Shock Proteins

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