X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details PROTEIN WAS CRYSTALLIZED FROM 23-26% PEG 8000, IN 160-180 MM POTASSIUM PHOSPHATE, 100 MM SODIUM CACODYLATE PH 7.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 137.6 α = 90
b = 123.8 β = 90
c = 66.6 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 294
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS -- 1996-08
Diffraction Radiation
Monochromator Protocol
NI FILTER --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
2.6 25 90.0 0.04 0.081 -- 3.7 -- 32245 -- 0.5 --
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)
2.6 2.76 74.0 0.126 0.269 2.0 1.8 --

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 2.6 20.0 -- 0.0 -- 32222 -- 89.9 -- 0.214 0.214 0.297 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 2.6 2.72 -- -- 2474 0.32 0.416 -- 72.0
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 33.7
Anisotropic B[1][1] 2.99
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.71
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -2.28
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.7
x_bond_d 0.016
x_angle_deg 1.9
x_dihedral_angle_d 25.0
Coordinate Error
Parameter Value
Luzzati Resolution Cutoff (Low) 20.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 7878
Nucleic Acid Atoms 0
Heterogen Atoms 175
Solvent Atoms 179

Software

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