X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.2
Temperature 291.0
Details HANGING DROPS WERE FORMED BY MIXING 4 MICROLITERS OF PROTEIN SOLUTION AT 16-20 MG/ML WITH 4 MICROLITERS OF RESERVOIR SOLUTION CONTAINING 10-12% PEG 4000, 0.2M TRIS (PH 7.2), 0.2M ZINC ACETATE 10% GLYCEROL. CRYSTALS GREW AT 18-20 DEGREES WITHIN A FEW DAYS., vapor diffusion - hanging drop, temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 81.26 α = 90
b = 105.28 β = 109.54
c = 122.19 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1996-04-18
Diffraction Radiation
Monochromator Protocol
Y --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.5 -- SRS PX9.5

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
2.5 20 93.9 0.069 0.069 -- 3.57 -- 62936 -- 0.0 41.2
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)
2.5 2.63 90.4 0.168 -- 4.0 3.3 --

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
MIR 2.5 20.0 -- 0.0 -- 62936 2461 97.46 -- 0.196 0.196 0.224 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 -- 277 7501 0.196 0.301 0.018 89.57
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 37.5
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.007
x_dihedral_angle_d 24.31
x_angle_deg 1.34
x_improper_angle_d 1.183
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 11122
Nucleic Acid Atoms 0
Heterogen Atoms 13
Solvent Atoms 331

Software

Software
Software Name Purpose
X-PLOR model building version: 3.1
X-PLOR refinement version: 3.1
MOSFLM data reduction
CCP4 data scaling
X-PLOR phasing version: 3.1