4OKL

Crystal Structure of d(CCCCGGTACCGGGG)2 at 1.65 Angstrom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of d(CCCCGGTACCGGGG)2 at 1.65 angstrom resolution.

Purushothaman, M.Varghese, A.Mandal, P.K.Gautham, N.

(2014) Acta Crystallogr F Struct Biol Commun 70: 860-865

  • DOI: 10.1107/S2053230X1401084X

  • PubMed Abstract: 
  • The crystal structure of the tetradecanucleotide d(CCCCGGTACCGGGG)2 has previously been reported as an A-type double helix at a resolution of 2.5 Å in space group P41. Here, the structure of this sequence was determined at a significantly higher reso ...

    The crystal structure of the tetradecanucleotide d(CCCCGGTACCGGGG)2 has previously been reported as an A-type double helix at a resolution of 2.5 Å in space group P41. Here, the structure of this sequence was determined at a significantly higher resolution of 1.65 Å in space group P4₁2₁2. The differences in crystal packing between the former and latter are described. The crystallographic asymmetric unit consists of one tetradecanucleotide duplex that spans more than one full turn of the A-helix. This structure allowed the unambiguous identification of solvent interactions.


    Related Citations: 
    • The structure of a full turn of an A-DNA duplex d(CGCGGGTACCCGCG)2.
      Venkadesh, S.,Mandal, P.K.,Gautham, N.
      (2011) Biochem.Biophys.Res.Commun. 407: 307
    • Structure of the tetradecanucleotide d(CCCCGGTACCGGGG)2 as an A-DNA duplex.
      Mandal, P.K.,Venkadesh, S.,Gautham, N.
      (2012) Acta Crystallogr.,Sect.F 68: 393


    Organizational Affiliation

    CAS in Crystallography and Biophysics, University of Madras, Guindy, Chennai, Tamil Nadu 600 025, India.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
14 mer A-DNAA,B14N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.227 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 41.270α = 90.00
b = 41.270β = 90.00
c = 87.670γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
MxCuBEdata collection
SCALAdata scaling
MOSFLMdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2014-12-10
    Type: Database references