X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.3
Details 0.5MICROL HANGING DROP CONTAINING 87MG/ML OF THERMOLYSIN IN BUFFER A (50MM TRIS/HCL PH8.3, 1M KSCN, 20MM CACL2) WAS EQUILIBRATED AGAINST 740MICROL BUFFER A AND 260MICROL WATER (SALTING-IN METHOD), pH 8.30

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 93.17 α = 90
b = 93.17 β = 90
c = 130.63 γ = 120
Symmetry
Space Group P 61 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 283
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH BENT MIRROR 1999-07-15
Diffraction Radiation
Monochromator Protocol
SI(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON LURE BEAMLINE DW21B -- LURE DW21B

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
2.18 19 92.4 0.086 -- -- 3.7 -- 15898 -- -- 12.1
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)
2.18 2.32 83.9 -- -- -- -- --

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 2.18 18.46 -- 0.0 -- 16715 1703 92.4 -- 0.163 0.163 0.215 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 2.18 2.32 -- 261 2198 0.183 0.243 0.015 83.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 16.6
Anisotropic B[1][1] -0.72
Anisotropic B[1][2] -3.17
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.72
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 1.44
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.3
c_bond_d 0.011
c_dihedral_angle_d 22.8
c_mcbond_it 1.5
c_scbond_it 2.57
c_scangle_it 3.52
c_improper_angle_d 0.73
c_mcangle_it 2.05
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.16
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.26
Luzzati Sigma A (R-Free Set) 0.22
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2432
Nucleic Acid Atoms 0
Heterogen Atoms 25
Solvent Atoms 170

Software

Software
Software Name Purpose
CNS refinement version: 1.1
MOSFLM data reduction
SCALA data scaling
CNS phasing