1I2K | pdb_00001i2k

AMINODEOXYCHORISMATE LYASE FROM ESCHERICHIA COLI

• PDB DOI: https://doi.org/10.2210/pdb1I2K/pdb

• Classification: LYASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-02-09 Released: 2003-09-02 
• Deposition Author(s): Jensen, P.Y., Parsons, J.F., Fisher, K.E., Pachikara, A.S., Tordova, M., Howard, A.J., Eisenstein, E., Ladner, J.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.79 Å
• R-Value Free: 
  0.248 (Depositor), 0.239 (DCC) 
• R-Value Work: 
  0.164 (Depositor), 0.166 (DCC) 
• R-Value Observed: 
  0.164 (Depositor) 

Literature

Structure and Mechanism of Escherichia coli Aminodeoxychorismate Lyase

Jensen, P.Y., Parsons, J.F., Fisher, K.E., Pachikara, A.S., Tordova, M., Howard, A.J., Eisenstein, E., Ladner, J.E.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 29.99 kDa 
• Atom Count: 2,346 
• Modeled Residue Count: 269 
• Deposited Residue Count: 269 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
4-AMINO-4-DEOXYCHORISMATE LYASE	A	269	Escherichia coli	Mutation(s): 0  Gene Names: PABC EC: 4 (PDB Primary Data), 4.1.3.38 (UniProt)
UniProt
Find proteins for P28305 (Escherichia coli (strain K12)) Explore P28305  Go to UniProtKB:  P28305

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PLP	B [auth A]	PYRIDOXAL-5'-PHOSPHATE C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.79 Å
• R-Value Free:  0.248 (Depositor), 0.239 (DCC) 
• R-Value Work:  0.164 (Depositor), 0.166 (DCC) 
• R-Value Observed: 0.164 (Depositor) 

Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.047	α = 90
b = 72.966	β = 90
c = 82.871	γ = 90

Software Package:

Software Name	Purpose
X-GEN	data scaling
X-GEN	data reduction
SHELX	model building
SHELXL-97	refinement
SHELX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-09-02 
Deposition Author(s): Jensen, P.Y., Parsons, J.F., Fisher, K.E., Pachikara, A.S., Tordova, M., Howard, A.J., Eisenstein, E., Ladner, J.E.

Revision History  

• Version 1.0: 2003-09-02
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description
• Version 1.4: 2025-03-26
  Changes: Data collection, Database references, Derived calculations, Structure summary