X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6
Details HANGING DROP METHOD: THE PROTEIN WAS DISSOLVED IN 33 MM TRIS-HCL BUFFER (PH 5.8) IN THE PRESENCE OF 4 MM CACL2 AND 90 MM BENZAMIDINE TO THE CONCENTRATION 40 MG/ML. THE PRECIPITANT AND RESERVOIR SOLUTION CONTAINED 2.1 M (NH4)2SO4, 4 MM CACL2, 33 MM TRIS-HCL AT PH 6.0., vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 63.02 α = 90
b = 63.78 β = 90
c = 69.04 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU -- 1997-11-01
Diffraction Radiation
Monochromator Protocol
GRAPHITE SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU -- -- --

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
1.93 70 84.0 0.073 -- -- 3.9 -- 18025 -- 1.0 --
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)
1.93 2.0 63.0 -- -- 2.6 -- --

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
MOLECULAR REPLACEMENT 1.93 8.0 -- 2.0 -- 18025 1743 83.5 -- 0.179 0.179 0.228 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 1.93 2.02 -- 156 1466 0.254 0.28 0.022 58.2
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 21.9
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.15
x_bond_d 0.006
x_angle_deg 1.39
x_dihedral_angle_d 25.9
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1629
Nucleic Acid Atoms 0
Heterogen Atoms 31
Solvent Atoms 165

Software

Computing
Computing Package Purpose
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement