X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 7
Temperature 291.0
Details PEG 8000, sodium formate, Tris HCL, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 66.5 α = 90
b = 87.98 β = 90
c = 230.51 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2000-02-15
Diffraction Radiation
Monochromator Protocol
graphite MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-2 -- SSRL BL9-2

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
2.4 20 90.7 -- -- -- -- 46595 46595 0.0 0.0 31.1
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)
2.4 2.49 58.0 -- -- -- -- --

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 2.4 19.99 -- 0.0 46595 46595 2460 91.3 -- -- 0.197 0.239 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 2.4 2.51 4008 218 3790 0.236 0.235 0.016 60.6
X Ray Diffraction 2.51 2.64 5004 236 4768 0.232 0.231 0.015 75.5
X Ray Diffraction 2.64 2.81 6193 302 5891 0.236 0.236 0.014 92.9
X Ray Diffraction 2.81 3.02 6673 351 6322 0.23 0.23 0.012 99.9
X Ray Diffraction 3.02 3.32 6671 316 6355 0.218 0.219 0.012 100.0
X Ray Diffraction 3.32 3.8 6710 348 6362 0.198 0.2 0.011 99.9
X Ray Diffraction 3.8 4.78 6767 334 6433 0.163 0.164 0.009 99.9
X Ray Diffraction 4.78 19.99 7029 355 6674 0.181 0.179 0.01 99.9
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 41.82
Anisotropic B[1][1] 1.54
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -6.37
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 4.83
RMS Deviations
Key Refinement Restraint Deviation
x_torsion_impr_deg 0.76
x_torsion_deg 21.9
x_bond_d 0.006
x_angle_deg 1.2
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.27
Luzzati Sigma A (Observed) 0.24
Luzzati Resolution Cutoff (Low) 5.0
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 8275
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 323

Software

Software
Software Name Purpose
CNS refinement version: 1.0
DENZO data reduction
SCALEPACK data scaling
SHELXS phasing