X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7
Details CRYSTALS WERE GROWN BY HANGING DROP VAPOR DIFFUSION FROM 4-UL DROPLETS OF PROTEIN SOLUTION (15 MG/ML) IN 50 MM PHOSPHATE BUFFER (PH7.0) AND 0.2 M AMMONIUM PHOSPHATE AGAINST A RESERVOIR OF THE ABOVE BUFFER CONTAINING 0.4M AMMONIUM PHOSPHATE., VAPOR DIFFUSION, HANGING DROP

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 75.1 α = 90
b = 93.73 β = 90
c = 171.9 γ = 90
Symmetry
Space Group I 2 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 287
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS II MIRRORS 1997-07-25
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU300 -- -- --

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
2.3 30.7 93.9 0.07 -- -- 4.3 -- 24024 -- 2.0 21.11
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)
2.3 2.38 83.4 0.36 -- 3.2 3.1 --

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
MIRAS 2.3 8.0 -- 2.0 -- 23447 2319 87.93 -- -- 0.185 0.258 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 2.3 2.4 -- 260 2286 0.269 0.335 0.035 76.7
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 21.62
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.3
x_bond_d 0.012
x_angle_deg 1.34
x_dihedral_angle_d 26.1
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.23
Luzzati Sigma A (Observed) 0.19
Luzzati Resolution Cutoff (Low) 8.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3514
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 184

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CCP4 Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
CCP4 model building
SCALEPACK data reduction
DENZO data collection