1QGD

TRANSKETOLASE FROM ESCHERICHIA COLI

• PDB DOI: https://doi.org/10.2210/pdb1QGD/pdb

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


• Deposited: 1999-04-23 Released: 2003-06-17 
• Deposition Author(s): Isupov, M.N., Littlechild, J.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.176 
• R-Value Work: 0.132 

Starting Model: experimental

Literature

Crystal Structure of Escherichia coli Transketolase

Isupov, M.N., Rupprecht, M.P., Wilson, K.S., Dauter, Z., Littlechild, J.A.

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: 145.38 kDa 
• Atom Count: 11,273 
• Modelled Residue Count: 1,324 
• Deposited Residue Count: 1,324 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (TRANSKETOLASE)	A, B	662	Escherichia coli	Mutation(s): 0  EC: 2.2.1.1
UniProt
Find proteins for P27302 (Escherichia coli (strain K12)) Explore P27302  Go to UniProtKB:  P27302

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TPP	E [auth A], H [auth B]	THIAMINE DIPHOSPHATE C12 H19 N4 O7 P2 S AYEKOFBPNLCAJY-UHFFFAOYSA-O
SO4	D [auth A], F [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	C [auth A], G [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.176 
• R-Value Work: 0.132 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.85	α = 90
b = 126	β = 90
c = 151.05	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-06-17 
Deposition Author(s): Isupov, M.N., Littlechild, J.A.

Revision History  

• Version 1.0: 2003-06-17
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2019-11-27
  Changes: Data collection, Database references
• Version 1.4: 2023-08-16
  Changes: Data collection, Database references, Derived calculations, Refinement description