3E9W

X-Ray Crystal Structure of the hexamer DCACACG:Crystal grown in the presence of cobalt(III)hexammine Chloride.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.237 

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This is version 1.3 of the entry. See complete history. 


Literature

The structure of d(CACACG).d(CGTGTG).

Venkadesh, S., Mandal, P.K., Gautham, N.

(2009) Acta Crystallogr Sect F Struct Biol Cryst Commun 65: 8-13

  • DOI: https://doi.org/10.1107/S1744309108037706
  • Primary Citation of Related Structures:  
    3E9W

  • PubMed Abstract: 

    The crystal structure of d(CACACG).d(CGTGTG) was solved to a resolution of 2.05 A in space group P2(1). The duplex assumes the left-handed Z-DNA structure. The presence of two A.T base pairs in the hexamer does not greatly affect the conformation. The most significant changes compared with the regular structure of Z-DNA are in the values of twist in the central portion of the helix. This variation, as well as others in the values of roll, inclination etc., follow the pattern observed previously in the structure of d(CGCACG).d(CGTGCG).

    • Organizational Affiliation: 

    Centre for Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, India.


Macromolecules

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Entity ID: 1
MoleculeChains LengthOrganismImage
5'-D(*CP*AP*CP*AP*CP*G)-3'6N/A
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
5'-D(*CP*GP*TP*GP*TP*G)-3'6N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 17.854α = 90
b = 43.44β = 119.87
c = 17.847γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
AMoREphasing
REFMACrefinement
AUTOMARdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-09-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-02-21
    Changes: Data collection, Database references
  • Version 1.3: 2024-04-03
    Changes: Refinement description