1P6O

The crystal structure of yeast cytosine deaminase bound to 4(R)-hydroxyl-3,4-dihydropyrimidine at 1.14 angstroms.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.14 Å
  • R-Value Free: 0.152 
  • R-Value Work: 0.110 
  • R-Value Observed: 0.110 

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This is version 1.2 of the entry. See complete history


Literature

The 1.14 a crystal structure of yeast Cytosine deaminase. Evolution of nucleotide salvage enzymes and implications for genetic chemotherapy.

Ireton, G.C.Black, M.E.Stoddard, B.L.

(2003) Structure 11: 961-972

  • DOI: 10.1016/s0969-2126(03)00153-9
  • Primary Citation of Related Structures:  
    1P6O, 1OX7

  • PubMed Abstract: 
  • Cytosine deaminase (CD) catalyzes the deamination of cytosine and is only present in prokaryotes and fungi, where it is a member of the pyrimidine salvage pathway. The enzyme is of interest both for antimicrobial drug design and gene therapy applications against tumors ...

    Cytosine deaminase (CD) catalyzes the deamination of cytosine and is only present in prokaryotes and fungi, where it is a member of the pyrimidine salvage pathway. The enzyme is of interest both for antimicrobial drug design and gene therapy applications against tumors. The structure of Saccharomyces cerevisiae CD has been determined in the presence and absence of a mechanism-based inhibitor, at 1.14 and 1.43 A resolution, respectively. The enzyme forms an alpha/beta fold similar to bacterial cytidine deaminase, but with no similarity to the alpha/beta barrel fold used by bacterial cytosine deaminase or mammalian adenosine deaminase. The structures observed for bacterial, fungal, and mammalian nucleic acid deaminases represent an example of the parallel evolution of two unique protein folds to carry out the same reaction on a diverse array of substrates.


    Organizational Affiliation

    Fred Hutchinson Cancer Research Center, University of Washington, 1100 Fairview Avenue North A3-023, Seattle, WA 98109, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cytosine deaminaseA, B161Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: FCY1 OR YPR062W OR YP9499.17
EC: 3.5.4.1
Find proteins for Q12178 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12178 
Go to UniProtKB:  Q12178
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.14 Å
  • R-Value Free: 0.152 
  • R-Value Work: 0.110 
  • R-Value Observed: 0.110 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.88α = 90
b = 70.417β = 90
c = 71.523γ = 90
Software Package:
Software NamePurpose
SHELXmodel building
SHELXL-97refinement
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-08-19
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance