X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 277.0
Details 10% PEG3350, 100 mM Tris, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 75.66 α = 90
b = 75.66 β = 90
c = 75.49 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2003-04-09
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X4A 0.9793 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
1.8 20 98.0 0.049 0.049 -- -- 44954 43612 0.0 0.0 17.0
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)
1.8 1.86 99.9 0.206 -- -- -- --

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 1.8 16.49 -- 22.0 44954 41325 2978 92.4 -- -- 0.19 0.215 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 1.8 1.86 -- 257 3354 0.219 0.233 0.015 81.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 24.0
Anisotropic B[1][1] 2.58
Anisotropic B[1][2] 1.83
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 2.58
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -5.16
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.93
c_scbond_it 2.05
c_scangle_it 2.91
c_mcangle_it 1.88
c_dihedral_angle_d 22.5
c_angle_deg 1.3
c_mcbond_it 1.17
c_bond_d 0.004
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.17
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1375
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 192

Software

Software
Software Name Purpose
CNS refinement version: 1.1
DENZO data reduction
SCALEPACK data scaling
SOLVE phasing