X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.5
Temperature 273.0
Details 20-24% PEG 3350, 0.2 M Ammonium Acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 273K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 53.76 α = 90
b = 109.88 β = 90
c = 113.16 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2001-09-01
Diffraction Radiation
Monochromator Protocol
GRAPHITE SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 14-BM-C 1.000 APS 14-BM-C

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
2.04 99 98.8 -- -- -- 14.2 43500 42970 0.0 2.0 10.8
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)
2.04 2.11 99.4 0.192 0.192 8.29 -- 4212

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
MOLECULAR REPLACEMENT 2.04 31.79 -- 0.0 43500 42970 3971 98.7 -- 0.196 0.196 0.257 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 2.04 2.17 6586 395 6586 0.24 0.269 0.014 97.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 19.8
Anisotropic B[1][1] 2.3
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 1.28
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -3.58
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 22.7
c_angle_deg 1.4
c_improper_angle_d 0.86
c_bond_d 0.006
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.22
Luzzati Sigma A (Observed) 0.2
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.3
Luzzati Sigma A (R-Free Set) 0.2
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5498
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 366

Software

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