1GRL image
Entry Detail
PDB ID:
1GRL
Keywords:
CHAPERONIN
Title:
THE CRYSTAL STRUCTURE OF THE BACTERIAL CHAPERONIN GROEL AT 2.8 ANGSTROMS
Biological Source:
Source Organism:
Escherichia coli
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
1995-03-07
Release Date:
1995-10-15
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.80 Å
R-Value Free:
0.36
R-Value Work:
0.32
R-Value Observed:
0.32
Space Group:
C 2 2 21
1GRL validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:GROEL (HSP60 CLASS)
Mutations:R13G, A126V
Chain IDs:A, B, C, D, E, F, G
Chain Length:548
Number of Molecules:7
Biological Source:Escherichia coli
UniProt ID:P0A6F5 Pfam ID:PF00118 EC:5.6.1.7
Ligand Molecules
NA
Primary Citation
The crystal structure of the bacterial chaperonin GroEL at 2.8 A.
Nature 371 578 586 (1994)
PMID: 7935790 DOI: 10.1038/371578a0

Abstact

The crystal structure of Escherichia coli GroEL shows a porous cylinder of 14 subunits made of two nearly 7-fold rotationally symmetrical rings stacked back-to-back with dyad symmetry. The subunits consist of three domains: a large equatorial domain that forms the foundation of the assembly at its waist and holds the rings together; a large loosely structured apical domain that forms the ends of the cylinder; and a small slender intermediate domain that connects the two, creating side windows. The three-dimensional structure places most of the mutationally defined functional sites on the channel walls and its outward invaginations, and at the ends of the cylinder.

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Primary Citation of related structures
1GRL