6JJF

Crystal structure of a two-quartet DNA mixed-parallel/antiparallel G-quadruplex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Native de novo structural determinations of non-canonical nucleic acid motifs by X-ray crystallography at long wavelengths.

Zhang, Y.El Omari, K.Duman, R.Liu, S.Haider, S.Wagner, A.Parkinson, G.N.Wei, D.

(2020) Nucleic Acids Res 48: 9886-9898

  • DOI: https://doi.org/10.1093/nar/gkaa439
  • Primary Citation of Related Structures:  
    6JJF, 6JJH, 6JJI, 6TQI

  • PubMed Abstract: 

    Obtaining phase information remains a formidable challenge for nucleic acid structure determination. The introduction of an X-ray synchrotron beamline designed to be tunable to long wavelengths at Diamond Light Source has opened the possibility to native de novo structure determinations by the use of intrinsic scattering elements. This provides opportunities to overcome the limitations of introducing modifying nucleotides, often required to derive phasing information. In this paper, we build on established methods to generate new tools for nucleic acid structure determinations. We report on the use of (i) native intrinsic potassium single-wavelength anomalous dispersion methods (K-SAD), (ii) use of anomalous scattering elements integral to the crystallization buffer (extrinsic cobalt and intrinsic potassium ions), (iii) extrinsic bromine and intrinsic phosphorus SAD to solve complex nucleic acid structures. Using the reported methods we solved the structures of (i) Pseudorabies virus (PRV) RNA G-quadruplex and ligand complex, (ii) PRV DNA G-quadruplex, and (iii) an i-motif of human telomeric sequence. Our results highlight the utility of using intrinsic scattering as a pathway to solve and determine non-canonical nucleic acid motifs and reveal the variability of topology, influence of ligand binding, and glycosidic angle rearrangements seen between RNA and DNA G-quadruplexes of the same sequence.


  • Organizational Affiliation

    State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.


Macromolecules

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains LengthOrganismImage
DNA (5'-D(*GP*GP*CP*TP*CP*GP*GP*CP*GP*GP*CP*GP*GP*A)-3')
A, B
14Pseudorabies virus Ea
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NCO (Subject of Investigation/LOI)
Query on NCO

Download Ideal Coordinates CCD File 
F [auth A],
G [auth A],
I [auth B]
COBALT HEXAMMINE(III)
Co H18 N6
DYLMFCCYOUSRTK-UHFFFAOYSA-N
K (Subject of Investigation/LOI)
Query on K

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
NA (Subject of Investigation/LOI)
Query on NA

Download Ideal Coordinates CCD File 
H [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.37α = 90
b = 47.6β = 110.02
c = 37.73γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
Aimlessdata scaling
HKL2Mapphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31672558

Revision History  (Full details and data files)

  • Version 1.0: 2020-02-26
    Type: Initial release
  • Version 1.1: 2020-09-09
    Changes: Database references, Derived calculations
  • Version 1.2: 2020-10-07
    Changes: Database references
  • Version 1.3: 2024-03-27
    Changes: Data collection, Database references