X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.5
Temperature 277.0
Details 0.1 M Tris-HCl, 0.2 M Lithium sulfate, 30 % PEG 4000, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 32.12 α = 90
b = 75.81 β = 90
c = 80.46 γ = 90
Symmetry
Space Group I 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2003-04-20
Diffraction Radiation
Monochromator Protocol
double crystal SI 111 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 19-ID 0.97934 APS 19-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 50 93.7 0.03 0.033 -- 4.1 9494 9494 2.95 2.95 18.7
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)
1.76 1.82 74.2 0.176 0.212 2.95 2.95 1190

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 1.76 27.59 -- 0.0 9494 9494 985 93.6 0.223 0.223 0.223 0.253 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 1.76 1.87 -- 134 1190 0.274 0.341 0.03 79.6
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 31.1
Anisotropic B[1][1] -2.7
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.59
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 3.29
RMS Deviations
Key Refinement Restraint Deviation
c_mcangle_it 2.33
c_scangle_it 3.48
c_scbond_it 2.23
c_angle_deg 1.2
c_mcbond_it 1.48
c_improper_angle_d 0.57
c_dihedral_angle_d 25.6
c_bond_d 0.006
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.22
Luzzati Sigma A (Observed) 0.18
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.27
Luzzati Sigma A (R-Free Set) 0.25
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 516
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 194

Software

Software
Software Name Purpose
CNS refinement version: 1.0
HKL-2000 data reduction
CCP4 data scaling version: (TRUNCATE)
MOLREP phasing