X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion
pH 6.5
Temperature 18.0
Details 20 mM Tris/HCl, 1.8-1.9 M ammonium sulfate, pH 6.5, VAPOR DIFFUSION, temperature 18K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 49.6 α = 90
b = 60.07 β = 90
c = 78.88 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-12-08
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE BW7B -- EMBL/DESY, Hamburg BW7B

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
1.46 10 98.7 0.082 -- -- 3.0 498167 40911 0.0 0.0 13.1
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)
1.44 1.48 98.9 0.283 -- -- 2.5 2799

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
-- 1.46 10.0 0.0 0.0 498167 39779 1111 95.7 -- 0.178 0.178 0.205 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 1.46 1.55 -- 165 6135 0.222 0.264 0.021 92.3
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 20.1
Anisotropic B[1][1] 6.32
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -2.98
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -3.34
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 6.06
c_bond_d 0.031
c_mcbond_it 2.96
c_scangle_it 7.56
c_improper_angle_d 2.26
c_angle_deg 2.5
c_dihedral_angle_d 25.3
c_mcangle_it 4.23
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.14
Luzzati Sigma A (Observed) 0.11
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.16
Luzzati Sigma A (R-Free Set) 0.13
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1894
Nucleic Acid Atoms 0
Heterogen Atoms 13
Solvent Atoms 272

Software

Software
Software Name Purpose
SHARP/SOLOMON model building
CNS refinement version: 1.0
DENZO data reduction
SCALEPACK data scaling
SHARP phasing
SOLOMON phasing