X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.6
Details 20% 2-PROPANOL, 20% PEG4k, 0.1M SODIUM CITRATE, pH 5.6

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 121.41 α = 90
b = 43.26 β = 96.99
c = 55.3 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 170
Diffraction Detector
Detector Diffraction Type Details Collection Date
-- -- -- 1997-10-01
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X4A 0.97921,0.97894,0.96373 NSLS X4A

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
1.6 30 97.0 -- 0.076 -- 2.0 -- 37155 -- -- 28.3
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)
1.6 1.66 95.8 -- 0.4 -- 2.5 --

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 1.6 12.0 -- 0.0 -- 35943 3645 95.2 -- -- 0.229 0.248 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 1.6 1.7 -- 548 4908 0.381 0.381 0.014 87.8
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 32.9
Anisotropic B[1][1] 5.34
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 2.94
Anisotropic B[2][2] -6.52
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.99
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 24.6
c_angle_deg 1.4
c_scangle_it 5.34
c_bond_d 0.005
c_improper_angle_d 0.71
c_mcangle_it 2.73
c_mcbond_it 2.55
c_scbond_it 5.82
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.25
Luzzati Sigma A (Observed) 0.27
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.28
Luzzati Sigma A (R-Free Set) 0.13
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1829
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 186

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
CNS refinement
CNS phasing