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Entry Detail
PDB ID:
1CSM
Keywords:
ISOMERASE
Title:
THE CRYSTAL STRUCTURE OF ALLOSTERIC CHORISMATE MUTASE AT 2.2 ANGSTROMS RESOLUTION
Biological Source:
Source Organism:
Saccharomyces cerevisiae
PDB Version:
Deposition Date:
1994-08-22
Release Date:
1995-09-15
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.20 Å
R-Value Free:
0.31
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 61
1CSM validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:CHORISMATE MUTASE
Chain IDs:A, B
Chain Length:256
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae
UniProt ID:P32178 Pfam ID:PF01817 EC:5.4.99.5
Ligand Molecules
TRP
Primary Citation
The crystal structure of allosteric chorismate mutase at 2.2-A resolution.
Proc.Natl.Acad.Sci.USA 91 10814 10818 (1994)
PMID: 7971967 DOI: 10.1073/pnas.91.23.10814

Abstact

The crystal structure of an allosteric chorismate mutase, the Thr-226-->Ile mutant, from yeast Saccharomyces cerevisiae has been determined to 2.2-A resolution by using the multiple isomorphous replacement method. Solvent-flattening and electron-density modification were applied for phase improvement. The current crystallographic R factor is 0.196. The final model includes 504 of the 512 residues and 97 water molecules. In addition, two tryptophan molecules were identified in the interface between monomers. The overall structure is completely different from the reported structure of chorismate mutase from Bacillus subtilis. This structure showed 71% helices with essentially no beta-sheet structures.

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Primary Citation of related structures
1CSM