1H2E

BACILLUS STEAROTHERMOPHILUS PHOE (previously known as yhfr) in complex with phosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structures of Phosphate and Trivanadate Complexes of Bacillus Stearothermophilus Phosphatase Phoe: Structural and Functional Analysis in the Cofactor-Dependent Phosphoglycerate Mutase Superfamily

Rigden, D.J.Littlejohn, J.E.Henderson, K.Jedrzejas, M.J.

(2003) J Mol Biol 325: 411

  • DOI: https://doi.org/10.1016/s0022-2836(02)01229-9
  • Primary Citation of Related Structures:  
    1H2E, 1H2F

  • PubMed Abstract: 

    Bacillus stearothermophilus phosphatase PhoE is a member of the cofactor-dependent phosphoglycerate mutase superfamily possessing broad specificity phosphatase activity. Its previous structural determination in complex with glycerol revealed probable bases for its efficient hydrolysis of both large, hydrophobic, and smaller, hydrophilic substrates. Here we report two further structures of PhoE complexes, to higher resolution of diffraction, which yield a better and thorough understanding of its catalytic mechanism. The environment of the phosphate ion in the catalytic site of the first complex strongly suggests an acid-base catalytic function for Glu83. It also reveals how the C-terminal tail ordering is linked to enzyme activation on phosphate binding by a different mechanism to that seen in Escherichia coli phosphoglycerate mutase. The second complex structure with an unusual doubly covalently bound trivanadate shows how covalent modification of the phosphorylable His10 is accompanied by small structural changes, presumably to catalytic advantage. When compared with structures of related proteins in the cofactor-dependent phosphoglycerate mutase superfamily, an additional phosphate ligand, Gln22, is observed in PhoE. Functional constraints lead to the corresponding residue being conserved as Gly in fructose-2,6-bisphosphatases and Thr/Ser/Cys in phosphoglycerate mutases. A number of sequence annotation errors in databases are highlighted by this analysis. B. stearothermophilus PhoE is evolutionarily related to a group of enzymes primarily present in Gram-positive bacilli. Even within this group substrate specificity is clearly variable highlighting the difficulties of computational functional annotation in the cofactor-dependent phosphoglycerate mutase superfamily.


  • Organizational Affiliation

    National Centre of Genetic Resources and Biotechnology, Cenargen/Embrapa, SAIN Parque Rural, Final W5, Asa Norte, 70770-900 Brasília, Brazil.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PHOSPHATASE207Geobacillus stearothermophilusMutation(s): 0 
UniProt
Find proteins for Q9ALU0 (Geobacillus stearothermophilus)
Explore Q9ALU0 
Go to UniProtKB:  Q9ALU0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9ALU0
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.546α = 90
b = 55.546β = 90
c = 164.645γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-08-12
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance