X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Microbatch
pH 8.5
Temperature 291.0
Details PEG 6000, ammonium phosphate, pH 8.5, Microbatch, temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 43.97 α = 90
b = 62.08 β = 90
c = 103.36 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
2 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH -- 2001-10-16
CCD MARRESEARCH -- 2001-11-18
Diffraction Radiation
Monochromator Protocol
-- --
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 17-ID 0.97 APS 17-ID
SYNCHROTRON APS BEAMLINE 17-ID 1.74 APS 17-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
1.97 40.46 -- -- 0.052 -- -- 18879 18879 2.0 2.0 --
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)
1.97 2.05 33.9 -- 0.378 -- -- --

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
Single Anomalous Scattering 1.97 53.45 -- -- -- 16201 1749 86.78 -- 0.2097 0.20437 0.25909 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 1.97 2.021 -- 24 273 0.314 0.42 -- --
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 35.298
Anisotropic B[1][1] -0.64
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.48
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.16
RMS Deviations
Key Refinement Restraint Deviation
r_dihedral_angle_1_deg 6.095
r_nbd_refined 0.184
r_bond_refined_d 0.014
r_scangle_it 3.535
r_symmetry_vdw_refined 0.235
r_chiral_restr 0.097
r_xyhbond_nbd_refined 0.129
r_mcangle_it 1.374
r_scbond_it 2.088
r_gen_planes_refined 0.005
r_mcbond_it 0.744
r_symmetry_hbond_refined 0.167
r_angle_refined_deg 1.35
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.28
Luzzati Sigma A (Observed) 0.23
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.34
Luzzati Sigma A (R-Free Set) 0.27
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1819
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 158

Software

Software
Software Name Purpose
CNS refinement version: 1.1
HKL-2000 data reduction
SCALEPACK data scaling