Crystal Structure of the apo Staphylococcus aureus phosphofructokinase

Experimental Data Snapshot

  • Resolution: 2.98 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 

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This is version 1.3 of the entry. See complete history


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

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

  • 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.

  • Organizational Affiliation

    Hefei National Laboratory for Physical Sciences at Microscale CAS Center for Excellence in Biomacromolecules, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Life Sciences , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ATP-dependent 6-phosphofructokinase322Staphylococcus aureus subsp. aureus NCTC 8325Mutation(s): 0 
Gene Names: pfkASAOUHSC_01807
Find proteins for Q2YTE2 (Staphylococcus aureus (strain bovine RF122 / ET3-1))
Explore Q2YTE2 
Go to UniProtKB:  Q2YTE2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2YTE2
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • 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 = 116.23α = 90
b = 36.949β = 123.3
c = 87.81γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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
  • Version 1.3: 2023-11-22
    Changes: Data collection, Database references, Refinement description