X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details PURIFIED PROTEIN (25MG/ML IN 100MM TRIS BUFFER, PH 7.5) WAS CRYSTALLIZED FROM 1.5M AMMONIUM SULFATE, 100MM CITRATE BUFFER, PH 5.5, AT ROOM TEMPERATURE., pH 6.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 43.67 α = 90
b = 86.37 β = 90
c = 64.94 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 296
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU COLLIMATOR 1995-12
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
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
1.8 64.9 74.9 0.107 0.091 -- 2.2 -- 17581 -- 1.0 11.1
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 2.0 56.0 0.27 0.22 1.8 1.5 --

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 2.0 5.0 -- 2.0 -- 12667 846 79.1 -- 0.213 0.213 0.31 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 2.0 2.08 -- 58 1202 0.31 0.365 0.048 63.83
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 19.8
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 1.58
x_scbond_it 1.41
x_mcangle_it 1.41
x_mcbond_it 1.22
x_improper_angle_d 1.6
x_bond_d 0.012
x_angle_deg 1.9
x_dihedral_angle_d 25.7
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.27
Luzzati Sigma A (Observed) 0.39
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.36
Luzzati Sigma A (R-Free Set) 0.4
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1956
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 52

Software

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