X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.5
Details PROTEIN WAS CRYSTALLIZED FROM 7-8% PEG8000, 300 MM NACL, 200MM MGCL2, 20 MM TRIS, PH 8.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 51.03 α = 90
b = 51.03 β = 90
c = 65.61 γ = 90
Symmetry
Space Group I 4

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 290
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD AREA DETECTOR SIEMENS -- 1995-08
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL1-5 -- SSRL BL1-5

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
1.8 25 99.0 -- 0.063 -- 10.9 -- 7712 -- 3.0 18.9
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 1.91 97.2 -- 0.035 3.5 -- --

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 1.8 10.0 -- 0.0 -- 7712 612 99.0 -- 0.2 0.2 0.241 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 1.91 -- 97 1145 0.334 0.376 0.038 97.2
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 26.2
RMS Deviations
Key Refinement Restraint Deviation
x_mcbond_it 2.07
x_bond_d 0.007
x_scbond_it 3.5
x_improper_angle_d 1.14
x_angle_deg 1.3
x_mcangle_it 3.42
x_dihedral_angle_d 24.4
x_scangle_it 5.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.21
Luzzati Sigma A (Observed) 0.22
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.24
Luzzati Sigma A (R-Free Set) 0.2
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 742
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 35

Software

Software
Software Name Purpose
X-PLOR model building version: 3.851
X-PLOR refinement version: 3.851
DENZO data reduction
SCALEPACK data scaling
X-PLOR phasing version: 3.851