1RH0

Crystal structure of human Tyrosyl-DNA Phosphodiesterase complexed with vanadate, octopamine and trinucleotide GTT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

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This is version 1.2 of the entry. See complete history


Literature

Explorations of peptide and oligonucleotide binding sites of tyrosyl-DNA phosphodiesterase using vanadate complexes.

Davies, D.R.Interthal, H.Champoux, J.J.Hol, W.G.

(2004) J Med Chem 47: 829-837

  • DOI: 10.1021/jm030487x
  • Primary Citation of Related Structures:  
    1RFI, 1RFF, 1RG2, 1RG1, 1RGU, 1RGT, 1RH0

  • PubMed Abstract: 
  • Tyrosyl-DNA phosphodiesterase (Tdp1) catalyzes the hydrolysis of a phosphodiester bond between a tyrosine residue and a DNA 3' phosphate and functions as a DNA repair enzyme that cleaves stalled topoisomerase I-DNA complexes. We previously determined a procedure to crystallize a quaternary complex containing Tdp1, vanadate, a DNA oligonucleotide, and a tyrosine-containing peptide that mimics the transition state for hydrolysis of the Tdp1 substrate ...

    Tyrosyl-DNA phosphodiesterase (Tdp1) catalyzes the hydrolysis of a phosphodiester bond between a tyrosine residue and a DNA 3' phosphate and functions as a DNA repair enzyme that cleaves stalled topoisomerase I-DNA complexes. We previously determined a procedure to crystallize a quaternary complex containing Tdp1, vanadate, a DNA oligonucleotide, and a tyrosine-containing peptide that mimics the transition state for hydrolysis of the Tdp1 substrate. Here, the ability of vanadate to accept a variety of different ligands is exploited to produce several different quaternary complexes with a variety of oligonucleotides, and peptides or a tyrosine analogue, in efforts to explore the binding properties of the Tdp1 DNA and peptide binding clefts. Eight crystal structures of Tdp1 with vanadate, oligonucleotides, and peptides or peptide analogues were determined. These structures demonstrated that Tdp1 is able to bind substituents with limited sequence variation in the polypeptide moiety and also bind oligonucleotides with sequence variation at the 3' end. Additionally, the tyrosine analogue octopamine can replace topoisomerase I derived peptides as the apical ligand to vanadate. The versatility of this system suggests that the formation of quaternary complexes around vanadate could be adapted to become a useful method for structure-based inhibitor design and has the potential to be generally applicable to other enzymes that perform chemistry on phosphate esters.


    Related Citations: 
    • Crystal structure of a transition state mimic for Tdp1 assembled from vanadate, DNA, and a topoisomerase I-derived peptide
      Davies, D.R., Interthal, H., Champoux, J.J., Hol, W.G.J.
      (2003) Chem Biol 10: 139
    • Insights into substrate binding and catalytic mechanism of human Tyrosyl-DNA Phosphodiesterase (Tdp1) from vanadate and tungstate-inhibited structures
      Davies, D.R., Interthal, H., Champoux, J.J., Hol, W.G.J.
      (2002) J Mol Biol 324: 917
    • The crystal structure of human Tyrosyl-DNA Phosphodiesterase, Tdp1
      Davies, D.R., Interthal, H., Champoux, J.J., Hol, W.G.J.
      (2002) Structure 10: 237

    Organizational Affiliation

    Department of Biochemistry, P.O. Box 357742, School of Medicine, University of Washington, Seattle, Washington 98195-7242, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosyl-DNA phosphodiesterase 1C [auth A], D [auth B]485Homo sapiensMutation(s): 3 
Gene Names: TDP1
EC: 3.1.4
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NUW8 (Homo sapiens)
Explore Q9NUW8 
Go to UniProtKB:  Q9NUW8
PHAROS:  Q9NUW8
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(*GP*TP*T)-3'A [auth D], B [auth F]3N/A
    Protein Feature View
    Expand
    • Reference Sequence
    Small Molecules
    Ligands 3 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    SPM (Subject of Investigation/LOI)
    Query on SPM

    Download Ideal Coordinates CCD File 
    F [auth A]SPERMINE
    C10 H26 N4
    PFNFFQXMRSDOHW-UHFFFAOYSA-N
     Ligand Interaction
    OTS (Subject of Investigation/LOI)
    Query on OTS

    Download Ideal Coordinates CCD File 
    G [auth A], I [auth B]4-(2S-AMINO-1-HYDROXYETHYL)PHENOL
    C8 H11 N O2
    QHGUCRYDKWKLMG-MRVPVSSYSA-N
     Ligand Interaction
    VO4
    Query on VO4

    Download Ideal Coordinates CCD File 
    E [auth A], H [auth B]VANADATE ION
    O4 V
    LSGOVYNHVSXFFJ-UHFFFAOYSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.30 Å
    • R-Value Free: 0.235 
    • R-Value Work: 0.188 
    • R-Value Observed: 0.191 
    • Space Group: P 21 21 21
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 49.692α = 90
    b = 104.75β = 90
    c = 194.033γ = 90
    Software Package:
    Software NamePurpose
    REFMACrefinement
    HKL-2000data reduction
    SCALEPACKdata scaling
    AMoREphasing

    Structure Validation

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    Ligand Structure Quality Assessment  



    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 2004-03-02
      Type: Initial release
    • Version 1.1: 2008-04-29
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance