X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 9
Details 3.0 M AMMONIUM SULFATE, 20 MM TRIS, 1MM EDTA, PH 9.0

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 91.54 α = 90
b = 91.54 β = 90
c = 45.74 γ = 120
Symmetry
Space Group P 6

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 292
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS PINHOLE COLLIMATOR 1993-02
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- SIEMENS -- -- --

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
1.88 6 98.7 0.053 -- -- 2.73 -- 17579 -- 0.0 18.0
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)
1.88 1.89 96.7 0.263 -- -- 2.64 --

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 1.88 5.0 -- 0.0 -- 15278 1511 89.9 -- 0.165 0.165 0.222 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 1.88 1.96 -- 150 1303 0.24 0.232 0.019 68.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 25.5
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 1.4
x_scangle_it 11.49
x_improper_angle_d 1.27
x_mcbond_it 2.56
x_dihedral_angle_d 18.7
x_scbond_it 7.92
x_bond_d 0.01
x_mcangle_it 3.12
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.2
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1225
Nucleic Acid Atoms 0
Heterogen Atoms 49
Solvent Atoms 159

Software

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