X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7
Details OPTIMAL CRYSTALLISATION CONDITIONS: PEG 4000 (6.2-6.7% W/V), SODIUM CACODYLATE (50MM, PH7.0), CALCIUM ACETATE (100MM)., pH 7.00

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 116.19 α = 90
b = 116.19 β = 90
c = 64.54 γ = 90
Symmetry
Space Group P 4 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC MIRRORS 2000-09-15
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-4 -- ESRF ID14-4

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
1.95 24.79 90.0 0.071 -- -- 2.7 -- 29486 -- -- 16.1
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)
1.95 1.98 87.0 0.338 -- 2.8 2.6 --

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 1.95 24.79 -- 0.0 -- 28153 1389 85.8 -- 0.211 0.211 0.239 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 1.95 2.07 -- 233 4115 0.323 0.342 0.022 81.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 30.3
Anisotropic B[1][1] -8.0
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -8.0
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 16.01
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.006
c_mcangle_it 1.72
c_angle_deg 1.5
c_scangle_it 2.87
c_improper_angle_d 1.09
c_mcbond_it 1.18
c_scbond_it 2.01
c_dihedral_angle_d 23.4
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.24
Luzzati Sigma A (Observed) 0.3
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.28
Luzzati Sigma A (R-Free Set) 0.32
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2506
Nucleic Acid Atoms 0
Heterogen Atoms 50
Solvent Atoms 170

Software

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