Uridine Phosphorylase from E. coli, Refined in the Monoclinic Crystal Lattice

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Work: 0.186 

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This is version 1.4 of the entry. See complete history


Atomic structure at 2.5 A resolution of uridine phosphorylase from E. coli as refined in the monoclinic crystal lattice.

Morgunova, E.Yu.Mikhailov, A.M.Popov, A.N.Blagova, E.V.Smirnova, E.A.Vainshtein, B.K.Mao, C.Armstrong, S.R.Ealick, S.E.Komissarov, A.A.Linkova, E.V.Burlakova, A.A.Mironov, A.S.Debabov, V.G.

(1995) FEBS Lett 367: 183-187

  • DOI: https://doi.org/10.1016/0014-5793(95)00489-v
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Uridine phosphorylase from E. coli (Upase) has been crystallized using vapor diffusion technique in a new monoclinic crystal form. The structure was determined by the molecular replacement method at 2.5 A resolution. The coordinates of the trigonal crystal form were used as a starting model and the refinement by the program XPLOR led to the R-factor of 18.6%. The amino acid fold of the protein was found to be the same as that in the trigonal crystals. The positions of flexible regions were refined. The conclusion about the involvement in the active site is in good agreement with the results of the biochemical experiments.

  • Organizational Affiliation

    Institute of Crystallography of Russian Academy of Sciences, Moscow.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
uridine phosphorylase
A, B, C, D, E
A, B, C, D, E, F
253Escherichia coliMutation(s): 0 
Find proteins for P12758 (Escherichia coli (strain K12))
Explore P12758 
Go to UniProtKB:  P12758
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP12758
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Work: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.6α = 90
b = 98.8β = 120.2
c = 93.7γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2001-10-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Refinement description
  • Version 1.4: 2024-04-03
    Changes: Refinement description