190D

Crystal structure of a four-stranded intercalated DNA: d(C4)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of a four-stranded intercalated DNA: d(C4).

Chen, L.Cai, L.Zhang, X.Rich, A.

(1994) Biochemistry 33: 13540-13546

  • DOI: 10.1021/bi00250a005
  • Primary Citation of Related Structures:  
    190D

  • PubMed Abstract: 
  • The crystal structure of d(C4) solved at 2.3-A resolution reveals a four-stranded molecule composed of two interdigitated or intercalated duplexes. The duplexes are held together by hemiprotonated cytosine-cytosine base pairs and are parallel stranded, but the two duplexes point in opposite directions ...

    The crystal structure of d(C4) solved at 2.3-A resolution reveals a four-stranded molecule composed of two interdigitated or intercalated duplexes. The duplexes are held together by hemiprotonated cytosine-cytosine base pairs and are parallel stranded, but the two duplexes point in opposite directions. The molecule has a slow right-handed twist of 12.4 degrees between covalently linked cytosine base pairs, and the base stacking distance is 3.1 A. This is in general agreement with the NMR studies. A biological role for DNA in this conformation is suggested.


    Organizational Affiliation

    MA Inst Tech, Cambridge



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*CP*CP*CP*C)-3')A, B, C, D, E, F, G, H4N/A
    Protein Feature View
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    • Reference Sequence
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.80 Å
    • R-Value Work: 0.218 
    • R-Value Observed: 0.218 
    • Space Group: I 2 3
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 82.3α = 90
    b = 82.3β = 90
    c = 82.3γ = 90
    Software Package:
    Software NamePurpose
    X-PLORrefinement

    Structure Validation

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    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 1995-02-07
      Type: Initial release
    • Version 1.1: 2008-05-22
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance