X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.3
Temperature 293.0
Details Sodium acetate, cacodylate buffer, pH 6.30, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 74.79 α = 90
b = 74.79 β = 90
c = 180.99 γ = 120
Symmetry
Space Group P 31

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 103
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH MIRRORS 2000-12-20
Diffraction Radiation
Monochromator Protocol
GRAPHITE MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 17-ID 0.9537, 0.9791, 0.9792 APS 17-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
1.76 36 80.0 0.037 -- -- 5.1 -- 89619 -- 0.0 22.6

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 19.49 -- 1.0 48788 47319 2526 94.2 -- 0.197 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 2.3 2.44 -- 394 6658 0.252 0.293 0.015 83.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 36.1
Anisotropic B[1][1] 3.28
Anisotropic B[1][2] 4.53
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 3.28
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -6.56
RMS Deviations
Key Refinement Restraint Deviation
c_mcangle_it 2.11
c_bond_d 0.006
c_angle_deg 1.3
c_mcbond_it 1.3
c_scbond_it 2.26
c_scangle_it 3.38
c_dihedral_angle_d 23.5
c_improper_angle_d 0.91
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.26
Luzzati Sigma A (Observed) 0.27
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.33
Luzzati Sigma A (R-Free Set) 0.33
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 7348
Nucleic Acid Atoms 0
Heterogen Atoms 324
Solvent Atoms 346

Software

Software
Software Name Purpose
HKL-2000 data collection
X-GEN data reduction
SOLVE phasing
CNS refinement version: 1.0
HKL-2000 data reduction
X-GEN data scaling