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_mcbond_it 1.85
x_scbond_it 2.78
x_dihedral_angle_d 17.77
x_angle_deg 1.8
x_bond_d 0.009
x_improper_angle_d 1.39
x_mcangle_it 3.34
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

Software
Software Name Purpose
HEAVY model building
BRICOGNE'S model building version: GENERATE
INTERPOLATE model building
TNT refinement
X-PLOR refinement version: 3.843
SDMS data reduction version: DETECTOR SYSTEM
SDMS data scaling version: DETECTOR SYSTEM
HEAVY phasing
BRICOGNE'S phasing version: GENERATE
INTERPOLATE phasing
TNT phasing