X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details PROTEIN 10 MG/ML IN 50MM BIS-TRIS PROPANE BUFFER PH 6.0-6.5 2MM DTT, 20MM MGCL2, 1MM NAN3, 18% AMMONIUM SULPHATE EQUILBRIATED AGAINST 30-38% AMMONIUM SULPHATE IN 100MM BIS-TRIS PROPANE BUFFER PH 6.0-6.5. SEE REFERENCE 2

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 101.9 α = 90
b = 154.81 β = 90
c = 175.12 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 CCD -- 2002-12-09
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-2 -- ESRF ID14-2

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
2.1 25 96.2 0.088 -- -- 2.3 -- 77419 -- -- 18.8
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)
2.1 2.15 84.2 0.35 -- 2.0 1.8 --

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 2.1 24.65 -- 0.0 -- 77390 3844 95.8 -- 0.193 0.193 0.225 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 2.1 2.23 -- 574 10805 0.251 0.278 0.012 85.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 30.8
Anisotropic B[1][1] -1.71
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 6.78
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -5.07
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 3.56
c_improper_angle_d 0.86
c_bond_d 0.006
c_dihedral_angle_d 22.3
c_mcbond_it 2.0
c_mcangle_it 2.42
c_angle_deg 1.2
c_scangle_it 5.04
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.23
Luzzati Sigma A (Observed) 0.23
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.27
Luzzati Sigma A (R-Free Set) 0.24
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6623
Nucleic Acid Atoms 0
Heterogen Atoms 59
Solvent Atoms 487

Software

Software
Software Name Purpose
CNS refinement version: 1.0
MOSFLM data reduction
SCALA data scaling
MOLREP phasing