Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Protein Workshop | Ligand Explorer

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

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

Biological Assembly 2  

 3D View: Structure | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 220574.53 
• Atom Count: 15327 
• Residue Count: 2025 
• Unique protein chains: 1

1ITZ

Maize Transketolase in complex with TPP

• DOI: 10.2210/pdb1ITZ/pdb

• Classification: TRANSFERASE
• Organism(s): Zea mays
• Expression System: Escherichia coli


• Deposited: 2002-02-15 Released: 2003-02-15 
• Deposition Author(s): Gerhardt, S., Echt, S., Bader, G., Freigang, J., Busch, M., Bacher, A., Huber, R., Fischer, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.200 
• R-Value Work: 0.166 

Literature

Structure and properties of an engineered transketolase from maize

Gerhardt, S., Echt, S., Busch, M., Freigang, J., Auerbach, G., Bader, G., Martin, W.F., Bacher, A., Huber, R., Fischer, M.

(2003) PLANT PHYSIOL. 132: 1941-1949

• PubMed: 12913150 
• DOI: 10.1104/pp.103.020982


• PubMed Abstract: 
  

The gene specifying plastid transketolase (TK) of maize (Zea mays) was cloned from a cDNA library by southern blotting using a heterologous probe from sorghum (Sorghum bicolor). A recombinant fusion protein comprising thioredoxin of Escherichia coli and mature TK of maize was expressed at a high level in E. coli and cleaved with thrombin, affording plastid TK. The protein in complex with thiamine pyrophoshate was crystallized, and its structure was solved by molecular replacement. The enzyme is a C2 symmetric homodimer closely similar to the enzyme from yeast (Saccharomyces cerevisiae). Each subunit is folded into three domains. The two topologically equivalent active sites are located in the subunit interface region and resemble those of the yeast enzyme.

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Organizational Affiliation: 

Lehrstuhl für Organische Chemie und Biochemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Transketolase	A, B, C	675	Zea mays	Mutation(s): 0  EC: 2.2.1.1
Find proteins for Q7SIC9 (Zea mays) Go to UniProtKB:  Q7SIC9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
TPP	A, B, C	THIAMINE DIPHOSPHATE C12 H19 N4 O7 P2 S AYEKOFBPNLCAJY-UHFFFAOYSA-O
MG	A, B, C	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.200 
• R-Value Work: 0.166 
• Space Group: P 3₁ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 136.438	α = 90.00
b = 136.438	β = 90.00
c = 203.731	γ = 120.00

Software Package:

Software Name	Purpose
CNS	refinement
CCP4	data scaling
SCALA	data scaling
CNS	phasing
MOSFLM	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-02-15 
• Released Date: 2003-02-15 
• Deposition Author(s): Gerhardt, S., Echt, S., Bader, G., Freigang, J., Busch, M., Bacher, A., Huber, R., Fischer, M.

Revision History 

• Version 1.0: 2003-02-15
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance