1D38

INFLUENCE OF AGLYCONE MODIFICATIONS ON THE BINDING OF ANTHRACYCLINE DRUGS TO DNA: THE MOLECULAR STRUCTURE OF IDARUBICIN AND 4-O-DEMETHYL-11-DEOXYDOXORUBICIN COMPLEXED TO D(CGATCG)

  • Classification: DNA
  • Mutation(s): No 

  • Deposited: 1991-04-23 Released: 1992-04-15 
  • Deposition Author(s): Gao, Y.-G., Wang, A.H.-J.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Observed: 0.188 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Influence of aglycone modifications on the binding of anthracycline drugs to DNA: the molecular structure of idarubicin and 4-O-demethyl-11-deoxydoxorubicin complexed to d(CGATCG).

Gao, Y.G.Wang, A.H.

(1991) Anticancer Drug Des 6: 137-149

  • Primary Citation of Related Structures:  
    1D37, 1D38

  • PubMed Abstract: 
  • X-ray diffraction analyses of the complexes between two anthracycline antitumor compounds, idarubicin (IDR) and 4-O-demethyl-11-deoxydoxorubicin (ddDOX), with the DNA hexamer d(CGATCG) provided the detailed three-dimensional molecular structures at 1.7 A and 1 ...

    X-ray diffraction analyses of the complexes between two anthracycline antitumor compounds, idarubicin (IDR) and 4-O-demethyl-11-deoxydoxorubicin (ddDOX), with the DNA hexamer d(CGATCG) provided the detailed three-dimensional molecular structures at 1.7 A and 1.8 A resolution, respectively. Their structures have been refined with the constrained refinement procedure to final R-factors of 0.188 (1724 reflections for IDR) and 0.179 (1247 reflections for ddDOX). The overall structures of both complexes are similar to those of the previously studied DAU- and DOX-DNA complexes. In both complexes, two IDR (and ddDOX) molecules bind to the DNA hexamer double helix with the elongated aglycone chromophore intercalated between the CpG steps at both ends of the helix. The aglycone chromophore spans the GC Watson-Crick base pairs with its amino sugar lying in the minor groove where little structural difference is seen, compared with the daunorubicin-d(CGATCG) and doxorubicin-d(CGATCG) complexes. In contrast, the missing C4 methoxy of IDR and the missing methyl group at the O4 position of ddDOX result in a different binding surface in the major groove. The O4 hydroxyl group is capable of receiving and/or donating a hydrogen bond to proteins that bind to the drug-DNA complex. The missing O11 hydroxyl group in ring B creates an empty space in the intercalation cavity between the two GC base pairs, which appears to affect the stacking interactions between the aglycone and the DNA base pairs. Those structural changes in the major groove of the drug-DNA complexes due to the modifications of the aglycone chromophore may be responsible in part for the difference in their biological activities.


    Related Citations: 
    • Facile Formation of Crosslinked Adduct between DNA and the Daunorubicin Derivative MAR70 Mediated by Formaldehyde: Molecular Structure of the MAR70-d(CGTnACG) Covalent Adduct
      Gao, Y.-G., Liaw, Y.-C., Li, Y.-K., Van Der Marel, G.A., Van Boom, J.H., Wang, A.H.-J.
      (1991) Proc Natl Acad Sci U S A 88: 4845

    Organizational Affiliation

    Department of Physiology and Biophysics, University of Illinois, Urbana 61801.



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*CP*GP*AP*TP*CP*G)-3')A6N/A
    Protein Feature View
    Expand
    • Reference Sequence
    Small Molecules
    Ligands 2 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    DM5 (Subject of Investigation/LOI)
    Query on DM5

    Download Ideal Coordinates CCD File 
    B [auth A]IDARUBICIN
    C26 H27 N O9
    XDXDZDZNSLXDNA-TZNDIEGXSA-N
     Ligand Interaction
    MG
    Query on MG

    Download Ideal Coordinates CCD File 
    C [auth A]MAGNESIUM ION
    Mg
    JLVVSXFLKOJNIY-UHFFFAOYSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.70 Å
    • R-Value Observed: 0.188 
    • Space Group: P 41 21 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 28.13α = 90
    b = 28.13β = 90
    c = 53.68γ = 90
    Software Package:
    Software NamePurpose
    NUCLSQrefinement

    Structure Validation

    View Full Validation Report




    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 1992-04-15
      Type: Initial release
    • Version 1.1: 2008-05-22
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance