4EZ2

Crystal Structure of d(CCGGGACCGG)4 as a four-way junction at 1.6 angstrom resolution

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.218 

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This is version 1.1 of the entry. See complete history. 


Literature

Structure of d(CCGGGACCGG)(4) as a four-way junction at 1.6 A resolution: new insights into solvent interactions.

Chakraborty, A., Mandal, P.K., Gautham, N.

(2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 1169-1174

  • DOI: https://doi.org/10.1107/S1744309112034926
  • Primary Citation of Related Structures:  
    4EZ2

  • PubMed Abstract: 

    The crystal structure of the decamer sequence d(CCGGGACCGG)(4) has previously been reported at 2.16 Å resolution as a four-way junction. Here, the structure of this sequence is reported at the significantly higher resolution of 1.6 Å, which is the highest resolution reported for a four-way junction. This allowed the unambiguous identification of an extensive hydration network with distinct patterns and solvent-mediated interactions that shed new light on the role of water in the formation and stabilization of junction structures.

    • Organizational Affiliation: 

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


Macromolecules

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains LengthOrganismImage
5'-D(*CP*CP*GP*GP*GP*AP*CP*CP*GP*G)-3'
A, B
10N/A
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA
Download Ideal Coordinates CCD File 
C [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.218 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.01α = 90
b = 24.35β = 112.53
c = 38.18γ = 90
Software Package:
Software NamePurpose
MxCuBEdata collection
AMoREphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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View more in-depth experimental data
Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-17
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description