X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion
pH 8.25
Temperature 291.0
Details 25% PEG 4000, 0.1M Tris-HCl pH 8.25 0.3M Lithium Sulfate, 20mM DTT, VAPOR DIFFUSION, temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 67.44 α = 90
b = 70.62 β = 90
c = 85.85 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH -- 2002-07-05
Diffraction Radiation
Monochromator Protocol
SAGITALLY FOCUSED Si(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 31-ID 0.9798 APS 31-ID

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
2 20 99.2 0.1 -- -- -- 28788 28588 -- -1.0 28.5
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
2.0 2.07 89.7 -- -- -- -- --

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
SAD 2.0 19.92 -- 0.0 28391 27568 1378 97.1 -- 0.241 0.24 0.262 RANDOM
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 2.0 2.13 -- 217 4121 0.365 0.392 0.027 93.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 41.8
Anisotropic B[1][1] -6.26
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 4.53
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 1.72
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 2.29
c_dihedral_angle_d 22.1
c_bond_d 0.006
c_mcangle_it 2.83
c_angle_deg 1.0
c_improper_angle_d 0.62
c_mcbond_it 1.7
c_scangle_it 3.52
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.32
Luzzati Sigma A (R-Free Set) 0.4
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2613
Nucleic Acid Atoms 0
Heterogen Atoms 30
Solvent Atoms 200

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
SOLVE phasing
RESOLVE model building
CNS refinement version: 1.1
RESOLVE phasing