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|1dkg, resolution 2.80Å ()|
CRYSTAL STRUCTURE OF THE NUCLEOTIDE EXCHANGE FACTOR GRPE BOUND TO THE ATPASE DOMAIN OF THE MOLECULAR CHAPERONE DNAK
The crystal structure of the adenine nucleotide exchange factor GrpE in complex with the adenosine triphosphatase (ATPase) domain of Escherichia coli DnaK [heat shock protein 70 (Hsp70)] was determined at 2.8 angstrom resolution. A dimer of GrpE binds asymmetrically to a single molecule of DnaK. The structure of the nucleotide-free ATPase domain in complex with GrpE resembles closely that of the nucleotide-bound mammalian Hsp70 homolog, except for an outward rotation of one of the subdomains of the protein. This conformational change is not consistent with tight nucleotide binding. Two long alpha helices extend away from the GrpE dimer and suggest a role for GrpE in peptide release from DnaK.
Crystal structure of the nucleotide exchange factor GrpE bound to the ATPase domain of the molecular chaperone DnaK., Harrison CJ, Hayer-Hartl M, Di Liberto M, Hartl F, Kuriyan J, Science. 1997 Apr 18;276(5311):431-5. PMID:9103205
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1dkg is a 3 chain structure with sequence from Escherichia coli. The August 2002 RCSB PDB Molecule of the Month feature on Chaperones by David S. Goodsell is 10.2210/rcsb_pdb/mom_2002_8. Full crystallographic information is available from OCA.
- Harrison CJ, Hayer-Hartl M, Di Liberto M, Hartl F, Kuriyan J. Crystal structure of the nucleotide exchange factor GrpE bound to the ATPase domain of the molecular chaperone DnaK. Science. 1997 Apr 18;276(5311):431-5. PMID:9103205