X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.6
Details CRYSTALS WERE OBTAINED BY VAPOR DIFFUSION IN 2UL SITTING DROPS. THE RESERVOIR CONTAINED 25% PEG 4000, 0.2 M NH4-ACETATE AND 0.2 M NA-ACETATE PH 4.6. CRYSTALLIZATION WERE CARRIED OUT AT 20C.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 61.35 α = 90
b = 61.35 β = 90
c = 166.1 γ = 120
Symmetry
Space Group P 61

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH -- 2002-07-15
Diffraction Radiation
Monochromator Protocol
SILICON CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ELETTRA BEAMLINE 5.2R -- ELETTRA 5.2R

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
2.15 47 100.0 0.098 -- -- 7.2 -- 19211 -- -- 18.5
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)
2.15 2.21 96.5 0.27 -- 4.5 -- --

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 2.15 20.0 -- 0.0 -- 19131 1615 99.8 -- 0.208 0.208 0.262 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 2.15 2.21 -- 121 1436 0.204 0.277 0.025 96.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 20.7
Anisotropic B[1][1] -4.57
Anisotropic B[1][2] 1.7
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -4.57
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 9.14
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 4.55
c_scbond_it 3.11
c_mcangle_it 2.79
c_mcbond_it 1.85
c_improper_angle_d 1.02
c_bond_d 0.01
c_angle_deg 1.6
c_dihedral_angle_d 25.4
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.24
Luzzati Sigma A (Observed) 0.04
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.31
Luzzati Sigma A (R-Free Set) 0.17
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3104
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 136

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
AMORE Structure Solution
CNS 1.1 Structure Refinement
Software
Software Name Purpose
CNS version: 1.1 refinement
AMORE model building