X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7
Details AMMONIUM SULFATE 2.45 M, 100MM TRIS-HCL, PH 7.0 AT 290K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 100.37 α = 90
b = 100.37 β = 90
c = 204.34 γ = 90
Symmetry
Space Group P 43 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 120
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1997-06-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE BW7B -- EMBL/DESY, Hamburg BW7B

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
2.75 30 99.4 -- 0.042 -- 6.0 -- 27890 -- 0.0 42.1
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)
2.75 2.85 96.0 -- 0.181 7.3 4.6 --

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
MIRAS 2.75 20.0 -- 0.0 -- 27116 2030 97.3 -- 0.207 0.207 0.269 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 2.75 2.92 -- 322 3890 0.31 0.382 0.021 92.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 55.1
Anisotropic B[1][1] 8.36
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 8.36
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -16.73
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.2
c_mcangle_it 5.82
c_bond_d 0.006
c_scangle_it 8.62
c_scbond_it 6.37
c_mcbond_it 3.87
c_improper_angle_d 0.77
c_dihedral_angle_d 20.2
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.33
Luzzati Sigma A (Observed) 0.41
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.45
Luzzati Sigma A (R-Free Set) 0.54
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4874
Nucleic Acid Atoms 0
Heterogen Atoms 12
Solvent Atoms 271

Software

Software
Software Name Purpose
CCP4 model building
CNS refinement version: 0.1-0.4
DENZO data reduction
SCALEPACK data scaling
CCP4 phasing