X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.6
Details 23% PEG 4000 (W/V), 0.10 M SODIUM CITRATE, AND 0.2 M AMMONIUM ACETATE (PH 5.6). CRYSTALS (0.2 X 0.2 X 0.5 MM) WERE OBTAINED IN 4-6 WEEKS.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 66.56 α = 90
b = 65.57 β = 97.04
c = 103.22 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 125
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR ADSC COLLIMATOR 1996-05
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
1.85 -- 84.0 0.085 0.071 -- 3.8 -- 63078 -- 0.0 11.5
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)
1.85 2.0 82.0 0.39 0.27 1.6 2.1 --

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
MOLECULAR REPLACEMENT 1.9 20.0 -- 0.0 -- 58785 1143 84.4 -- 0.221 0.221 0.271 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 1.9 2.02 -- 187 8652 0.309 0.361 0.026 76.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 16.9
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 4.84
x_scbond_it 3.51
x_mcangle_it 3.11
x_mcbond_it 2.21
x_improper_angle_d 1.55
x_bond_d 0.011
x_angle_deg 1.6
x_dihedral_angle_d 28.4
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.24
Luzzati Sigma A (Observed) 0.28
Luzzati Resolution Cutoff (Low) 6.0
Luzzati ESD (R-Free Set) 0.29
Luzzati Sigma A (R-Free Set) 0.33
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6662
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 767

Software

Computing
Computing Package Purpose
UCSD Data Reduction (intensity integration)
UCSD 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
UCSD version: DATA PROCESSING SOFTWARE data reduction
UCSD version: DATA PROCESSING SOFTWARE data collection