X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 298.0
Details 0.1M imidazole, 0.2M calcium acetate, 15% (w/v) polyethylene glycol 3350, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 154.66 α = 90
b = 154.66 β = 90
c = 57.52 γ = 120
Symmetry
Space Group P 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH -- 2002-07-01
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 22-ID 0.9895,0.9793,0.9780 APS 22-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
2.2 20 -- 0.06 -- -- 2.0 -- 77584 -- -- 14.7

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
MAD 2.2 19.6 -- 0.0 -- 74763 3663 94.2 -- 0.211 0.211 0.259 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 2.2 2.34 -- -- -- 0.301 0.33 0.011 80.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 16.9
Anisotropic B[1][1] 0.97
Anisotropic B[1][2] 1.94
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.88
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -1.84
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 2.3
c_dihedral_angle_d 24.3
c_mcangle_it 1.8
c_mcbond_it 1.22
c_scbond_it 2.09
c_improper_angle_d 1.4
c_bond_d 0.025
c_scangle_it 2.76
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.34
Luzzati Sigma A (R-Free Set) 0.31
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 11382
Nucleic Acid Atoms 0
Heterogen Atoms 12
Solvent Atoms 637

Software

Software
Software Name Purpose
CNS refinement version: 1.0
MAR data reduction
d*TREK data scaling
RESOLVE phasing