X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8
Details 1.15M AMMONIUM SULFATE, 0.2M AMMONIUM PHOSPHATE PH 8.0

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 47.38 α = 90
b = 54.48 β = 90
c = 40.35 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 173
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-06-23
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X31 -- EMBL/DESY, HAMBURG X31

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
2.2 20 98.7 -- 0.094 -- 12.2 -- 5684 -- -- 25.4
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)
2.2 2.28 94.6 -- 0.299 2.27 4.2 --

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 2.2 10.0 -- 1.0 -- 4451 251 79.7 -- 0.222 0.222 0.321 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 2.2 2.34 -- 26 498 0.295 0.403 0.083 58.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 24.8
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 5.16
x_scbond_it 3.99
x_mcangle_it 4.57
x_mcbond_it 2.9
x_improper_angle_d 0.77
x_bond_d 0.008
x_angle_deg 1.3
x_dihedral_angle_d 25.7
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.3
Luzzati Sigma A (Observed) 0.35
Luzzati Resolution Cutoff (Low) 10.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 880
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 88

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
AMORE, CCP4 Structure Solution
X-PLOR 3.851 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.851 refinement
AMORE version: (CCP4) model building
SCALEPACK data reduction
DENZO data collection