1DHN

1.65 ANGSTROM RESOLUTION STRUCTURE OF 7,8-DIHYDRONEOPTERIN ALDOLASE FROM STAPHYLOCOCCUS AUREUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure and reaction mechanism of 7,8-dihydroneopterin aldolase from Staphylococcus aureus.

Hennig, M.D'Arcy, A.Hampele, I.C.Page, M.G.Oefner, C.Dale, G.E.

(1998) Nat Struct Biol 5: 357-362

  • DOI: 10.1038/nsb0598-357
  • Primary Citation of Related Structures:  
    1DHN, 2DHN

  • PubMed Abstract: 
  • Dihydroneopterin aldolase catalyzes the conversion of 7,8-dihydroneopterin to 6-hydroxymethyl-7,8-dihydropterin during the de novo synthesis of folic acid from guanosine triphosphate. The gene encoding the dihydroneopterin aldolase from S. aureus has ...

    Dihydroneopterin aldolase catalyzes the conversion of 7,8-dihydroneopterin to 6-hydroxymethyl-7,8-dihydropterin during the de novo synthesis of folic acid from guanosine triphosphate. The gene encoding the dihydroneopterin aldolase from S. aureus has been cloned, sequenced and expressed in Escherichia coli. The protein has been purified for biochemical characterization and its X-ray structure determined at 1.65 A resolution. The protein forms an octamer of 110,000 Mr molecular weight. Four molecules assemble into a ring, and two rings come together to give a cylinder with a hole of at least 13 A diameter. The structure of the binary complex with the product 6-hydroxymethyl-7,8-dihydropterin has defined the location of the active site. The structural information and results of site directed mutagenesis allow an enzyme reaction mechanism to be proposed.


    Organizational Affiliation

    Structural Biology and Biochemistry, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
7,8-DIHYDRONEOPTERIN ALDOLASEA121Staphylococcus aureusMutation(s): 0 
Gene Names: DHNAfolB
EC: 4.1.2.25 (UniProt), 5.1.99.8 (UniProt)
Find proteins for P56740 (Staphylococcus aureus)
Explore P56740 
Go to UniProtKB:  P56740
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.3α = 90
b = 61.3β = 90
c = 124.2γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MOSFLMdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-20
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance