1EBB

Bacillus stearothermophilus YhfR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.230 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure and Mechanism of Action of a Cofactor-Dependent Phosphoglycerate Mutase Homolog from Bacillus Stearothermophilus with Broad Specificity Phosphatase Activity.

Rigden, D.J.Mello, L.V.Setlow, P.Jedrzejas, M.J.

(2002) J Mol Biol 315: 1129

  • DOI: 10.1006/jmbi.2001.5290
  • Primary Citation of Related Structures:  
    1EBB

  • PubMed Abstract: 
  • The crystal structure of Bacillus stearothermophilus PhoE (originally termed YhfR), a broad specificity monomeric phosphatase with a molecular mass of approximately 24 kDa, has been solved at 2.3 A resolution in order to investigate its structure and function ...

    The crystal structure of Bacillus stearothermophilus PhoE (originally termed YhfR), a broad specificity monomeric phosphatase with a molecular mass of approximately 24 kDa, has been solved at 2.3 A resolution in order to investigate its structure and function. PhoE, already identified as a homolog of a cofactor-dependent phosphoglycerate mutase, shares with the latter an alpha/beta/alpha sandwich structure spanning, as a structural excursion, a smaller subdomain composed of two alpha-helices and one short beta-strand. The active site contains residues from both the alpha/beta/alpha sandwich and the sub-domain. With the exception of the hydrophilic catalytic machinery conserved throughout the cofactor-dependent phosphoglycerate mutase family, the active-site cleft is strikingly hydrophobic. Docking studies with two diverse, favored substrates show that 3-phosphoglycerate may bind to the catalytic core, while alpha-napthylphosphate binding also involves the hydrophobic portion of the active-site cleft. Combining a highly favorable phospho group binding site common to these substrate binding modes and data from related enzymes, a catalytic mechanism can be proposed that involves formation of a phosphohistidine intermediate on His10 and likely acid-base behavior of Glu83. Other structural factors contributing to the broad substrate specificity of PhoE can be identified. The dynamic independence of the subdomain may enable the active-site cleft to accommodate substrates of different sizes, although similar motions are present in simulations of cofactor-dependent phosphoglycerate mutases, perhaps favoring a more general functional role. A significant number of entries in protein sequence databases, particularly from unfinished microbial genomes, are more similar to PhoE than to cofactor-dependent phosphoglycerate mutases or to fructose-2,6-bisphosphatases. This PhoE structure will therefore serve as a valuable basis for inference of structural and functional characteristics of these proteins.


    Related Citations: 
    • A Cofactor-Dependent Phosphoglycerate Mutase Homolog from Bacillus Stearothermophilus is Actually a Broad Specificity Phosphatase
      Rigden, D.J., Bagyan, I., Lamani, E., Setlow, P., Jedrzejas, M.J.
      (2001) Protein Sci 10: 1835

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PHOSPHATASEA202Geobacillus stearothermophilusMutation(s): 0 
Gene Names: yhfR
UniProt
Find proteins for Q9ALU0 (Geobacillus stearothermophilus)
Explore Q9ALU0 
Go to UniProtKB:  Q9ALU0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.230 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.2α = 90
b = 55.2β = 90
c = 164.43γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-02-11
    Type: Initial release
  • Version 1.1: 2011-09-07
    Changes: Data collection, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Version format compliance