X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 298.0
Details lithium sulfate, glycerol, dithiothreitol, MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 48.5 α = 90
b = 330.9 β = 90
c = 182.4 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD SBC-2 -- 2000-11-21
CCD ADSC QUANTUM 4 -- 2001-08-03
CCD ADSC QUANTUM 4 -- 2001-08-03
Diffraction Radiation
Monochromator Protocol
Si (111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 19-ID 1.8455, 1.8461, 1.722 APS 19-ID
SYNCHROTRON NSLS BEAMLINE X25 1.6493, 1.6499, 1.61 NSLS X25
SYNCHROTRON NSLS BEAMLINE X25 1.15 NSLS X25

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
2.65 50 86.3 0.081 -- -- -- 43356 37423 0.0 -3.0 --
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)
2.65 2.74 59.0 0.561 -- 1.53 -- --

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
MAD 2.65 50.0 -- 0.0 43557 37408 1706 85.8 0.274 0.274 0.273 0.302 Random
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model Isotropic
Mean Isotropic B 93.46
Anisotropic B[1][1] -11.353
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 27.901
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -16.547
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.344
c_improper_angle_d 1.068
c_dihedral_angle_d 24.743
c_bond_d 0.0064
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.43
Luzzati Sigma A (Observed) 0.7
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.54
Luzzati Sigma A (R-Free Set) 0.64
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4170
Nucleic Acid Atoms 0
Heterogen Atoms 12
Solvent Atoms 65

Software

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