X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 4
Temperature 278.0
Details PEG 8000, potassium phosphate, ferrous sulfate, pH 4.0, VAPOR DIFFUSION, SITTING DROP, temperature 278K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 40.52 α = 90
b = 81.07 β = 90
c = 126.94 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2002-11-07
Diffraction Radiation
Monochromator Protocol
Si 111 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON PHOTON FACTORY BEAMLINE BL-6A 0.978 Photon Factory BL-6A

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
1.85 29.5 96.4 0.041 -- -- 3.64 35186 35186 0.0 0.0 19.9
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)
1.85 1.95 89.8 0.296 -- 2.6 3.43 4682

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
FOURIER SYNTHESIS 1.85 29.27 -- 0.0 36639 35137 1754 95.9 0.24 0.238 0.238 0.278 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 1.85 1.97 -- 288 5069 0.29 0.306 0.018 89.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 32.0
Anisotropic B[1][1] 1.92
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -3.58
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 1.66
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.76
c_dihedral_angle_d 25.1
c_bond_d 0.007
c_scangle_it 5.62
c_angle_deg 1.4
c_mcbond_it 2.84
c_mcangle_it 3.57
c_scbond_it 4.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.26
Luzzati Sigma A (Observed) 0.18
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.32
Luzzati Sigma A (R-Free Set) 0.23
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2969
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 236

Software

Software
Software Name Purpose
CNS refinement version: 1.1
MOSFLM data reduction
CCP4 data scaling version: (SCALA)
CNS phasing