5F99

X-ray Structure of the MMTV-A Nucleosome Core Particle


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6295sample was mixed 1:1 with 10 mM K-cacodylate, pH 6.0, 180 mM MgCl2, 50 mM KCl and equilibrated against a 1:4 dilution of the same solution
Crystal Properties
Matthews coefficientSolvent content
2.6453.46

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 107.873α = 90
b = 178.915β = 90
c = 109.061γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray90PIXELDECTRIS PILATUS 6M2012-10-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSLS BEAMLINE X06SA1.0SLSX06SA

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
12.6329.6894.20.08314.26.859659
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)
12.632.7873.80.3331.82.5

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE1KX52.6329.685965994.20.1750.2522Random
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]
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6379
Nucleic Acid Atoms6029
Solvent Atoms936
Heterogen Atoms5

Software

Software
Software NamePurpose
CNSrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing