1ECM

ATOMIC STRUCTURE OF THE BURIED CATALYTIC POCKET OF ESCHERICHIA COLI CHORISMATE MUTASE

• PDB DOI: https://doi.org/10.2210/pdb1ECM/pdb

• Classification: CHORISMATE MUTASE
• Organism(s): Escherichia coli
• Mutation(s): No 


• Deposited: 1994-11-28 Released: 1995-12-01 
• Deposition Author(s): Clardy, J., Lee, A.Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.231 
• R-Value Work: 0.192 
• R-Value Observed: 0.192 

Literature

ATOMIC-STRUCTURE OF THE BURIED CATALYTIC POCKET OF ESCHERICHIA-COLI CHORISMATE MUTASE.

Lee, A.Y., Karplus, P.A., Ganem, B., Clardy, J.

(1995) J Am Chem Soc 117: 3627-3628

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PQS (software)

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 25.56 kDa 
• Atom Count: 1,622 
• Modelled Residue Count: 186 
• Deposited Residue Count: 218 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENDO-OXABICYCLIC TRANSITION STATE ANALOGUE	A, B	109	Escherichia coli	Mutation(s): 0  EC: 5.4.99.5 (UniProt), 4.2.1.51 (UniProt)
UniProt
Find proteins for P0A9J8 (Escherichia coli (strain K12)) Explore P0A9J8  Go to UniProtKB:  P0A9J8

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TSA	C [auth A], D [auth B]	8-HYDROXY-2-OXA-BICYCLO[3.3.1]NON-6-ENE-3,5-DICARBOXYLIC ACID C10 H12 O6 KRZHNRULRHECRF-JQCUSGDOSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.231 
• R-Value Work: 0.192 
• R-Value Observed: 0.192 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 80.83	α = 90
b = 80.83	β = 90
c = 83.32	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-12-01 
Deposition Author(s): Clardy, J., Lee, A.Y.

Revision History  

• Version 1.0: 1995-12-01
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations, Other