X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.5
Temperature 293.0
Details Ammonium Sulfate, Tris buffer, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 70.49 α = 90
b = 70.49 β = 90
c = 61.38 γ = 120
Symmetry
Space Group P 65 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 95
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD SBC-2 -- 2002-07-13
Diffraction Radiation
Monochromator Protocol
Sagitally focused Si(111) MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 19-ID 0.95645,0.97910,0.97924 APS 19-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
2.3 50 99.8 0.079 -- -- 24.5 7562 7325 -- -3.0 --
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)
2.3 2.38 100.0 0.418 -- 6.8 -- 415

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
MAD 2.3 43.29 -- 0.0 7562 7325 763 96.6 -- -- 0.244 0.266 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 2.3 2.44 1043 91 1043 0.302 0.363 0.038 88.6
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 42.2
Anisotropic B[1][1] 0.34
Anisotropic B[1][2] 5.75
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.34
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -0.68
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.1
c_scangle_it 4.36
c_mcangle_it 2.89
c_scbond_it 3.25
c_dihedral_angle_d 18.4
c_bond_d 0.006
c_improper_angle_d 0.86
c_mcbond_it 1.74
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.31
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.39
Luzzati Sigma A (R-Free Set) 0.38
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 425
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 31

Software

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