1TK9

Crystal Structure of Phosphoheptose isomerase 1

• PDB DOI: https://doi.org/10.2210/pdb1TK9/pdb

• Classification: ISOMERASE
• Organism(s): Campylobacter jejuni
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2004-06-08 Released: 2004-06-22 
• Deposition Author(s): Rajashankar, K.R., Solorzano, V., Kniewel, R., Lima, C.D., Burley, S.K., New York SGX Research Center for Structural Genomics (NYSGXRC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.211 
• R-Value Work: 0.182 
• R-Value Observed: 0.182 

Starting Model: experimental

Literature

Crystal structures of two putative phosphoheptose isomerases.

Seetharaman, J., Rajashankar, K.R., Solorzano, V., Kniewel, R., Lima, C.D., Bonanno, J.B., Burley, S.K., Swaminathan, S.

(2006) Proteins 63: 1092-1096

• PubMed: 16477602 
• DOI: https://doi.org/10.1002/prot.20908
• Primary Citation of Related Structures:  
  1TK9, 1X94

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Organizational Affiliation: 

Biology Department, Brookhaven National Laboratory, Upton, New York 11973, USA.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 82.18 kDa 
• Atom Count: 6,367 
• Modelled Residue Count: 752 
• Deposited Residue Count: 752 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phosphoheptose isomerase 1	A, B, C, D	188	Campylobacter jejuni	Mutation(s): 4  Gene Names: LPCA1, GMHA1, CJ1149C EC: 5 (PDB Primary Data), 5.3.1.28 (UniProt)
UniProt
Find proteins for Q9PNE6 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168)) Explore Q9PNE6  Go to UniProtKB:  Q9PNE6

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B, C, D	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.211 
• R-Value Work: 0.182 
• R-Value Observed: 0.182 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.657	α = 90
b = 123.289	β = 90
c = 127.804	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-06-22 
Deposition Author(s): Rajashankar, K.R., Solorzano, V., Kniewel, R., Lima, C.D., Burley, S.K., New York SGX Research Center for Structural Genomics (NYSGXRC)

Revision History  

• Version 1.0: 2004-06-22
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-02-03
  Changes: Database references, Derived calculations, Structure summary
• Version 1.4: 2024-04-03
  Changes: Data collection, Database references, Refinement description
• Version 1.5: 2024-10-30
  Changes: Structure summary