1TPT

THREE-DIMENSIONAL STRUCTURE OF THYMIDINE PHOSPHORYLASE FROM ESCHERICHIA COLI AT 2.8 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional structure of thymidine phosphorylase from Escherichia coli at 2.8 A resolution.

Walter, M.R.Cook, W.J.Cole, L.B.Short, S.A.Koszalka, G.W.Krenitsky, T.A.Ealick, S.E.

(1990) J.Biol.Chem. 265: 14016-14022


  • PubMed Abstract: 
  • The three-dimensional structure of thymidine phosphorylase from Escherichia coli has been determined at 2.8 A resolution using multiple-isomorphous-replacement techniques. The amino acid sequence deduced from the deoA DNA sequence is also reported. T ...

    The three-dimensional structure of thymidine phosphorylase from Escherichia coli has been determined at 2.8 A resolution using multiple-isomorphous-replacement techniques. The amino acid sequence deduced from the deoA DNA sequence is also reported. Thymidine phosphorylase exists in the crystal as an S-shaped dimer in which the subunits are related by a crystallographic 2-fold axis. Each subunit is composed of a small alpha-helical domain of six helices and a large alpha/beta domain. The alpha/beta domain includes a six-stranded mixed beta-sheet and a four-stranded antiparallel beta-sheet. The active site has been identified by difference Fourier analyses of the binding of thymine and thymidine and lies in a cavity between the small and large domains. The central beta-sheet is splayed open to accommodate a putative phosphate-binding site which is probably occupied by a sulfate ion in the crystal.


    Organizational Affiliation

    Department of Biochemistry, University of Alabama, Birmingham 35294.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THYMIDINE PHOSPHORYLASE
A
440Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: deoA (tpp, ttg)
EC: 2.4.2.4
Find proteins for P07650 (Escherichia coli (strain K12))
Go to UniProtKB:  P07650
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TDR
Query on TDR

Download SDF File 
Download CCD File 
A
THYMINE
C5 H6 N2 O2
RWQNBRDOKXIBIV-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 133.000α = 90.00
b = 133.000β = 90.00
c = 67.500γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1991-07-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance