X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details 30% PEG5000, 0.2M AMMONIUM SULFATE, 0.1M MES (PH6.5), 291K, pH 6.50

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 47.15 α = 90
b = 47.15 β = 90
c = 204.77 γ = 120
Symmetry
Space Group P 65

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-04-15
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE BM14 0.9116, 0.9781, 0.9778 ESRF BM14

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
2.8 24 99.0 0.074 -- -- 3.0 -- 6347 -- -- 27.6
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)
2.8 2.9 99.0 0.6 -- -- 2.8 --

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
MAD 2.8 23.78 -- 0.0 -- 6153 671 97.2 -- 0.279 0.279 0.373 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 2.8 2.98 -- 115 783 0.458 0.587 0.055 85.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 79.4
Anisotropic B[1][1] 22.08
Anisotropic B[1][2] 24.47
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 22.08
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -44.15
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 4.5
c_scbond_it 2.81
c_mcangle_it 3.64
c_mcbond_it 2.06
c_improper_angle_d 0.93
c_bond_d 0.015
c_angle_deg 1.7
c_dihedral_angle_d 21.5
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.56
Luzzati Sigma A (Observed) 0.88
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.7
Luzzati Sigma A (R-Free Set) 1.14
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1844
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 0

Software

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