X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion
pH 7.5
Details VAPOR DIFFUSION, 15% PEG 8000, 45MM NA CAODYLATE, 34MM AMMONIUM SULFATE, 10MM TRIS-HCL, 4.5% GLYCEROL, 0.1 M MGCL., pH 7.5, vapor diffusion

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 42.4 α = 90
b = 129.3 β = 90
c = 234.2 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 95
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD PRINCETON 2K BENT MIRROR 1996-12-12
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE F2 -- CHESS F2

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
2.7 30 97.0 0.087 0.087 -- 6.0 -- 34819 -- 0.0 42.0
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)
2.7 2.78 89.7 0.18 0.18 5.0 3.0 --

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 2.5 30.0 -- 2.0 -- 36851 1849 97.47 -- 0.209 0.209 0.272 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 2.5 2.61 -- 110 2230 0.318 0.369 0.04 82.98
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 47.77
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.225
x_bond_d 0.008
x_angle_deg 1.31
x_dihedral_angle_d 22.48
Coordinate Error
Parameter Value
Luzzati Resolution Cutoff (Low) 30.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5348
Nucleic Acid Atoms 0
Heterogen Atoms 45
Solvent Atoms 152

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
PHASES Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
PHASES model building