X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7
Temperature 295.0
Details PEG4000, ammonium sulfate, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 49.14 α = 90
b = 123.46 β = 90
c = 151.82 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2002-05-25
Diffraction Radiation
Monochromator Protocol
Si 111 CHANNEL MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X25 0.9798, 0.9799, 0.92 NSLS X25

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 12 -- -- -- -- -- -- 30534 2.0 -3.0 10.2
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 2.12 95.7 -- -- -- -- --

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 2.0 12.0 -- 2.0 -- 30184 1560 95.7 -- 0.223 0.223 0.277 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 2.12 -- 244 4541 0.227 0.3 0.019 92.2
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 25.3
Anisotropic B[1][1] 12.73
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -5.5
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -7.22
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.4
c_dihedral_angle_d 22.0
c_scangle_it 10.6
c_scbond_it 26.08
c_mcbond_it 1.5
c_bond_d 0.006
c_improper_angle_d 1.27
c_mcangle_it 2.25
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.25
Luzzati Sigma A (Observed) 0.15
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.32
Luzzati Sigma A (R-Free Set) 0.22
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3473
Nucleic Acid Atoms 0
Heterogen Atoms 5
Solvent Atoms 391

Software

Software
Software Name Purpose
HKL-2000 data collection
SCALEPACK data scaling
MLPHARE phasing
CNS refinement version: 1.0
HKL-2000 data reduction