X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Liquid Diffusion in Microgravity
pH 6.5
Details PROTEIN WAS FOUR TIMES RECRYSTALLIZED FROM BULK SOLUTION BY ADDITION AF AMMONIUM SULFATE TO 15% SATURATION. SPACE CRYSTALS WERE GROWN BY LIQUID-LIQUID DIFFUSION IN A MICROGRAVITY ENVIRONMENT OVER 12 DAYS ABOARD IML-I MISSION OF THE US SPACE SHUTTLE., pH 6.50, liquid diffusion in microgravity

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 174.27 α = 90
b = 191.77 β = 90
c = 202.5 γ = 90
Symmetry
Space Group I 2 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 290
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SDMS NONE 1992-02
Diffraction Radiation
Monochromator Protocol
SUPPER GRAPHITE SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 -- -- --

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
1.81 30 89.0 0.091 0.091 -- 8.2 -- 271689 -- 2.0 8.7
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)
1.81 1.94 63.9 -- 0.199 -- 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
MIR, MOLECULAR REPLACEMENT 1.81 30.0 -- 4.0 -- 215809 3277 71.8 -- -- 0.179 0.184 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 1.81 1.9 -- 199 13835 0.204 0.215 0.01 71.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model INDIVIDUAL RESTRAINED
Mean Isotropic B 14.6
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 4.47
x_scbond_it 2.78
x_mcangle_it 3.34
x_mcbond_it 1.85
x_improper_angle_d 1.39
x_bond_d 0.009
x_angle_deg 1.8
x_dihedral_angle_d 17.77
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.16
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.19
Luzzati Sigma A (R-Free Set) 0.17
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1137
Nucleic Acid Atoms 422
Heterogen Atoms 18
Solvent Atoms 168

Software

Computing
Computing Package Purpose
SDMS DETECTOR SYSTEM Data Reduction (intensity integration)
SDMS DETECTOR SYSTEM Data Reduction (data scaling)
HEAVY, BRICOGNE'S GENERATE AND INTERPOLATE, TNT Structure Solution
X-PLOR 3.843 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.843 refinement
TNT model building
INTERPOLATE model building
BRICOGNE'S version: GENERATE model building
HEAVY model building