4TU1 | pdb_00004tu1

Structure of Toxoplasma gondii fructose 1,6 bisphosphate aldolase

• PDB DOI: https://doi.org/10.2210/pdb4TU1/pdb

• Classification: LYASE
• Organism(s): Toxoplasma gondii
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-06-23 Released: 2014-09-03 
• Deposition Author(s): Boucher, L.E., Bosch, J., Seattle Structural Genomics Center for Infectious Disease (SSGCID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.244 (Depositor), 0.246 (DCC) 
• R-Value Work: 
  0.194 (Depositor), 0.198 (DCC) 
• R-Value Observed: 
  0.196 (Depositor) 

Starting Model: experimental

Literature

Structure of Toxoplasma gondii fructose-1,6-bisphosphate aldolase.

Boucher, L.E., Bosch, J.

(2014) Acta Crystallogr F Struct Biol Commun 70: 1186-1192

• PubMed: 25195889 
• DOI: https://doi.org/10.1107/S2053230X14017087
• Primary Citation Related Structures: 
  4TU1


• PubMed Abstract: 
  

  The apicomplexan parasite Toxoplasma gondii must invade host cells to continue its lifecycle. It invades different cell types using an actomyosin motor that is connected to extracellular adhesins via the bridging protein fructose-1,6-bisphosphate aldolase. During invasion, aldolase serves in the role of a structural bridging protein, as opposed to its normal enzymatic role in the glycolysis pathway. Crystal structures of the homologous Plasmodium falciparum fructose-1,6-bisphosphate aldolase have been described previously. Here, T. gondii fructose-1,6-bisphosphate aldolase has been crystallized in space group P22121, with the biologically relevant tetramer in the asymmetric unit, and the structure has been determined via molecular replacement to a resolution of 2.0 Å. An analysis of the quality of the model and of the differences between the four chains in the asymmetric unit and a comparison between the T. gondii and P. falciparum aldolase structures is presented.

---

Organizational Affiliation: 
• Department of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, 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: 154.31 kDa 
• Atom Count: 11,268 
• Modeled Residue Count: 1,354 
• Deposited Residue Count: 1,420 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fructose-1,6-bisphosphate aldolase	A, B, C, D	355	Toxoplasma gondii	Mutation(s): 0  Gene Names: TGVEG_236040 EC: 4.1.2.13
UniProt
Find proteins for Q8I8I2 (Toxoplasma gondii) Explore Q8I8I2  Go to UniProtKB:  Q8I8I2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.244 (Depositor), 0.246 (DCC) 
• R-Value Work:  0.194 (Depositor), 0.198 (DCC) 
• R-Value Observed: 0.196 (Depositor) 

Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.258	α = 90
b = 134.458	β = 90
c = 162.43	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
Coot	model building
Blu-Ice	data collection
PHASER	phasing
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-09-03 
Deposition Author(s): Boucher, L.E., Bosch, J., Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2014-09-03
  Type: Initial release
  
• Version 1.1: 2014-09-24
  Changes: Database references
• Version 1.2: 2017-11-22
  Changes: Derived calculations, Other, Refinement description, Source and taxonomy
• Version 1.3: 2023-09-27
  Changes: Data collection, Database references, Refinement description