184D

SELF-ASSOCIATION OF A DNA LOOP CREATES A QUADRUPLEX: CRYSTAL STRUCTURE OF D(GCATGCT) AT 1.8 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Self-association of a DNA loop creates a quadruplex: crystal structure of d(GCATGCT) at 1.8 A resolution.

Leonard, G.A.Zhang, S.Peterson, M.R.Harrop, S.J.Helliwell, J.R.Cruse, W.B.d'Estaintot, B.L.Kennard, O.Brown, T.Hunter, W.N.

(1995) Structure 3: 335-340

  • DOI: 10.1016/s0969-2126(01)00165-4
  • Primary Citation of Related Structures:  
    184D

  • PubMed Abstract: 
  • The flexibility of DNA enables it to adopt three interconvertible types of duplex termed the A-, B- and Z-forms. It can also produce hairpin loops, triplex structures and guanine-rich quadruplex structures. Conformational flexibility assists in the tight packaging of DNA, for example in chromosomes ...

    The flexibility of DNA enables it to adopt three interconvertible types of duplex termed the A-, B- and Z-forms. It can also produce hairpin loops, triplex structures and guanine-rich quadruplex structures. Conformational flexibility assists in the tight packaging of DNA, for example in chromosomes. This is important given the large quantity of genetic information that must be packaged efficiently. Moreover, the ability of DNA to specifically self-associate or interact with complementary sequences is fundamental to many biological processes. Structural studies provide information about DNA conformation and DNA-DNA interactions and suggest features that might be relevant to how the molecule performs its biological role.


    Organizational Affiliation

    Department of Chemistry, University of Manchester, UK.



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*GP*CP*AP*TP*GP*CP*T)-3')A7N/A
    Protein Feature View
    Expand
    • Reference Sequence
    Small Molecules
    Ligands 1 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    MG
    Query on MG

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

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.80 Å
    • R-Value Work: 0.214 
    • R-Value Observed: 0.214 
    • Space Group: C 2 2 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 22.52α = 90
    b = 59.37β = 90
    c = 24.35γ = 90
    Software Package:
    Software NamePurpose
    X-PLORrefinement
    NUCLSQrefinement

    Structure Validation

    View Full Validation Report




    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 1995-07-10
      Type: Initial release
    • Version 1.1: 2008-05-22
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance