X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.6
Details 13-18% PEG4000/200-250MM LISO4, BUFFERED AT PH7.6 WITH 100MM TRIS

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 81.39 α = 90
b = 104.63 β = 90
c = 119.38 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 1996-03
Diffraction Radiation
Monochromator Protocol
MIRRORS --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX7.2 -- SRS PX7.2

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 20 99.9 -- 0.105 -- 5.6 -- 25776 -- 0.0 34.5
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)
2.8 3.02 99.9 -- 0.377 5.3 -- --

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 2.8 15.0 -- 0.0 -- 25502 1302 99.8 -- 0.233 0.233 0.284 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 2.93 -- 148 2952 0.347 0.407 0.033 98.6
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 36.6
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.12
x_bond_d 0.008
x_angle_deg 1.3
x_dihedral_angle_d 27.6
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.35
Luzzati Sigma A (Observed) 0.39
Luzzati Resolution Cutoff (Low) 10.0
Luzzati ESD (R-Free Set) 0.46
Luzzati Sigma A (R-Free Set) 0.52
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6740
Nucleic Acid Atoms 0
Heterogen Atoms 5
Solvent Atoms 15

Software

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