1B9L

7,8-DIHYDRONEOPTERIN TRIPHOSPHATE EPIMERASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.188 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of 7,8-dihydroneopterin triphosphate epimerase.

Ploom, T.Haussmann, C.Hof, P.Steinbacher, S.Bacher, A.Richardson, J.Huber, R.

(1999) Structure 7: 509-516

  • DOI: 10.1016/s0969-2126(99)80067-7
  • Primary Citation of Related Structures:  
    1B9L

  • PubMed Abstract: 
  • Dihydroneopterin triphosphate (H2NTP) is the central substrate in the biosynthesis of folate and tetrahydrobiopterin. Folate serves as a cofactor in amino acid and purine biosynthesis and tetrahydrobiopterin is used as a cofactor in amino acid hydroxylation and nitric oxide synthesis ...

    Dihydroneopterin triphosphate (H2NTP) is the central substrate in the biosynthesis of folate and tetrahydrobiopterin. Folate serves as a cofactor in amino acid and purine biosynthesis and tetrahydrobiopterin is used as a cofactor in amino acid hydroxylation and nitric oxide synthesis. In bacteria, H2NTP enters the folate biosynthetic pathway after nonenzymatic dephosphorylation; in vertebrates, H2NTP is used to synthesize tetrahydrobiopterin. The dihydroneopterin triphosphate epimerase of Escherichia coli catalyzes the inversion of carbon 2' of H2NTP.


    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Martins Germany. ploom@biochem.mpg.de



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (EPIMERASE)A, B, C, D, E, F, G, H120Escherichia coliMutation(s): 0 
EC: 5.1.99.7
UniProt
Find proteins for P0AC19 (Escherichia coli (strain K12))
Explore P0AC19 
Go to UniProtKB:  P0AC19
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.188 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.68α = 90
b = 69.68β = 90
c = 239.72γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-02-18
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance