3QCR

Incomplete structural model of a human telomeric DNA quadruplex-acridine complex.


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1K8PPDB entry 1K8P

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.5285MPD, KCl, Na cacodylate, spermine, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 285K
Crystal Properties
Matthews coefficientSolvent content
2.8957.37

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 71.674α = 90
b = 71.674β = 90
c = 29.37γ = 120
Symmetry
Space GroupP 62 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 3152010-06-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I030.9763DiamondI03

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
13.1629.3797.50.10219.916.9110422
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
3.163.261000.115

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB entry 1K8P3.29.96783461000.345950.343910.37837RANDOM39.295
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
-0.73-0.36-0.731.09
RMS Deviations
KeyRefinement Restraint Deviation
r_angle_refined_deg0.99
r_chiral_restr0.054
r_bond_refined_d0.006
r_gen_planes_refined0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms222
Solvent Atoms
Heterogen Atoms58

Software

Software
Software NamePurpose
DNAdata collection
PHASERphasing
REFMACrefinement
XDSdata reduction
SCALAdata scaling