152D

DIVERSITY OF WATER RING SIZE AT DNA INTERFACES: HYDRATION AND DYNAMICS OF DNA-ANTHRACYCLINE COMPLEXES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Observed: 0.226 

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This is version 1.2 of the entry. See complete history


Literature

Water ring structure at DNA interfaces: hydration and dynamics of DNA-anthracycline complexes.

Lipscomb, L.A.Peek, M.E.Zhou, F.X.Bertrand, J.A.VanDerveer, D.Williams, L.D.

(1994) Biochemistry 33: 3649-3659

  • DOI: 10.1021/bi00178a023
  • Primary Citation of Related Structures:  
    151D, 152D

  • PubMed Abstract: 
  • In crystallographic structures of biological macromolecules, one can observe many hydration rings that originate at one water molecule, pass via hydrogen bonds through several others, and return to the original water molecule. Five-membered water rings have been thought to occur with greater frequency than other ring sizes ...

    In crystallographic structures of biological macromolecules, one can observe many hydration rings that originate at one water molecule, pass via hydrogen bonds through several others, and return to the original water molecule. Five-membered water rings have been thought to occur with greater frequency than other ring sizes. We describe a quantitative assessment of relationships between water ring size and frequency of occurrence in the vicinity of nucleic acid interfaces. This report focuses on low-temperature X-ray crystallographic structures of two anthracyclines, adriamycin (ADRI) and daunomycin (DAUN), bound to d(CGATCG) and on several DNA structures published previously by others. We have obtained excellent low-temperature (-160 degrees C, LT) X-ray intensity data for d(CGATCG)-adriamycin and d(CGATCG)-daunomycin with a multiwire area detector. The LTX-ray data sets contain 20% (daunomycin, LT-DAUN) and 35% (adriamycin, LT-ADRI) more reflections than were used to derive the original room-temperature (15 degrees C) structures [Frederick, C.A., Williams, L.D., Ughetto, G., van der Marel, G. A., van Boom, J.H., Rich, A., & Wang, A.H.-J. (1990) Biochemistry 29, 2538-2549]. The results show that five-membered water rings are not preferred over other ring sizes. This assessment is consistent with our observation of broad dispersion W-W-W angles (sigma = 20 degrees). In addition, we report that the thermal mobility, distinct from the static disorder, of the amino sugar of daunomycin and adriamycin is significantly greater than that of the rest of the complex. This mobility implies that if the central AT base pair is switched to a CG base pair, there should be a low energy cost in avoiding the guanine amino group. The energy difference (for the sugar-binding preference) between d(CGTACG) and d(CGCGCG) could be considerably less than 20 kcal/mol, a value proposed previously from computation.


    Organizational Affiliation

    School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta 30332.



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*CP*GP*AP*TP*CP*G)-3')A6N/A
    Small Molecules
    Ligands 1 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    DM1
    Query on DM1

    Download Ideal Coordinates CCD File 
    A
    DAUNOMYCIN
    C27 H29 N O10
    STQGQHZAVUOBTE-VGBVRHCVSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.40 Å
    • R-Value Observed: 0.226 
    • Space Group: P 41 21 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 27.85α = 90
    b = 27.85β = 90
    c = 52.33γ = 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: 1994-05-04
      Type: Initial release
    • Version 1.1: 2008-05-22
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance