X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 2.4
Temperature 294.0
Details 1.25 M (NH4)2SO4, 0.1 M Na acetate, pH 2.4, VAPOR DIFFUSION, HANGING DROP, temperature 294K, pH 2.40

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 54.8 α = 90
b = 60.64 β = 90
c = 54.89 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 173
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH MIRROR 2002-12-01
Diffraction Radiation
Monochromator Protocol
SI(111) DOUBLE CRYSTAL SYSTEM SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 17-BM -- APS 17-BM

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
1.45 27.4 92.5 0.048 -- -- 0.93 -- 15321 -- 0.0 18.0
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)
1.45 1.5 77.4 0.334 -- 2.07 0.77 --

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
SAD 1.45 9.94 -- 0.0 14208 14682 1030 89.0 -- 0.196 0.196 0.251 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 1.45 1.5 -- 64 887 0.273 0.3 0.038 59.3
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 25.8
Anisotropic B[1][1] -4.79
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 3.44
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 1.34
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.023
c_angle_deg 2.5
c_improper_angle_d 2.16
c_mcangle_it 3.69
c_mcbond_it 2.5
c_scbond_it 4.65
c_scangle_it 6.51
c_dihedral_angle_d 26.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.16
Luzzati Sigma A (Observed) 0.13
Luzzati Resolution Cutoff (Low) 10.0
Luzzati ESD (R-Free Set) 0.2
Luzzati Sigma A (R-Free Set) 0.14
Number Disordered Residues 12.0
Occupancy Sum Hydrogen 0.0
Occupancy Sum Non Hydrogen 854.5
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 780
Nucleic Acid Atoms 0
Heterogen Atoms 5
Solvent Atoms 125

Software

Software
Software Name Purpose
SHELX model building
SHELXL-97 refinement
HKL-2000 data reduction
HKL-2000 data scaling
SOLVE phasing
CNS refinement version: 1.1