Biological Assembly 1  

 3D View: Structure | Electron Density

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 Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 34.88 kDa 
• Atom Count: 2414 
• Residue Count: 318 
• Unique protein chains: 1

5XOE

Crystal Structure of the apo Staphylococcus aureus phosphofructokinase

• DOI: 10.2210/pdb5XOE/pdb

• Classification: TRANSFERASE
• Organism(s): Staphylococcus aureus subsp. aureus NCTC 8325
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2017-05-27 Released: 2018-06-20 
• Deposition Author(s): Wang, C., Tian, T., Zang, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.98 Å
• R-Value Free: 0.311 
• R-Value Work: 0.233 
• R-Value Observed: 0.236 

Literature

Structural Insights into the Regulation of Staphylococcus aureus Phosphofructokinase by Tetramer-Dimer Conversion.

Tian, T., Wang, C., Wu, M., Zhang, X., Zang, J.

(2018) Biochemistry 57: 4252-4262

• PubMed: 29940104 
• DOI: 10.1021/acs.biochem.8b00028
• Primary Citation of Related Structures:  
  5XOE, 5XZ6, 5XZA, 5XZ8, 5XZ7, 5XZ9


• PubMed Abstract: 
  

Most reported bacterial phosphofructokinases (Pfks) are tetramers that exhibit activity allosterically regulated via conformational changes between the R and T states. We report that the Pfk from Staphylococcus aureus NCTC 8325 ( SaPfk) exists as both an active tetramer and an inactive dimer in solution. Multiple effectors, including pH, ADP, ATP, and adenylyl-imidodiphosphate (AMP-PNP), cause equilibrium shifts from the tetramer to dimer, whereas the substrate F6P stabilizes SaPfk tetrameric assembly. Crystal structures of SaPfk in complex with different ligands and biochemical analysis reveal that the flexibility of the Gly150-Leu151 motif in helix α7 plays a role in tetramer-dimer conversion. Thus, we propose a molecular mechanism for allosteric regulation of bacterial Pfk via conversion between the tetramer and dimer in addition to the well-characterized R-state/T-state mechanism.

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Organizational Affiliation: 

Key Laboratory of Structural Biology , Chinese Academy of Sciences , Hefei , Anhui 230026 , China.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ATP-dependent 6-phosphofructokinase	A	322	Staphylococcus aureus subsp. aureus NCTC 8325	Mutation(s): 0  Gene Names: pfkA, SAOUHSC_01807 EC: 2.7.1.11
Find proteins for Q2YTE2 (Staphylococcus aureus (strain bovine RF122 / ET3-1)) Explore Q2YTE2  Go to UniProtKB:  Q2YTE2

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.98 Å
• R-Value Free: 0.311 
• R-Value Work: 0.233 
• R-Value Observed: 0.236 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 116.23	α = 90
b = 36.949	β = 123.3
c = 87.81	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2017-05-27 
• Released Date: 2018-06-20 
Deposition Author(s): Wang, C., Tian, T., Zang, J.

Revision History 

• Version 1.0: 2018-06-20
  Type: Initial release
  
• Version 1.1: 2019-02-27
  Changes: Data collection, Database references
• Version 1.2: 2019-05-22
  Changes: Data collection, Database references, Source and taxonomy