X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 7
Temperature 292.0
Details 85 mM Tris-acetate, pH 7.0, 270 mM ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 292K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 143.61 α = 90
b = 143.61 β = 90
c = 77.46 γ = 120
Symmetry
Space Group P 3 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS II -- 1993-10-28
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 1.54 -- --

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
2.1 -- -- -- -- -- -- -- 113237 -- -- 14.6
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)
2.1 30.0 76.4 -- -- -- -- --

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 2.25 29.89 -- 0.0 -- 36527 2799 83.2 -- -- 0.168 0.206 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 2.25 2.39 -- 380 4572 0.198 0.255 0.013 68.2
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 27.4
Anisotropic B[1][1] 0.54
Anisotropic B[1][2] 2.56
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.54
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -1.09
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 5.42
c_scbond_it 3.92
c_mcangle_it 3.48
c_mcbond_it 2.43
c_improper_angle_d 0.8
c_bond_d 0.006
c_angle_deg 1.2
c_dihedral_angle_d 20.6
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Sigma A (Observed) 0.19
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.26
Luzzati Sigma A (R-Free Set) 0.24
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5854
Nucleic Acid Atoms 0
Heterogen Atoms 214
Solvent Atoms 260

Software

Computing
Computing Package Purpose
R-AXIS Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
MERLOT Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CNS version: 1.0 refinement
MERLOT model building