X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 5.8
Temperature 295.0
Details POLYETHYLENE GLYCOL 3350, MAGNESIUM ACETATE, SODIUM CACODYLATE, PH 5.8, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K. THE CRYSTAL WAS TREATED WITH A MOTHER LIQUOR SOLUTION CONTAINING 0.1% HYDROGEN PEROXIDE PRIOR TO FREEZING.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 72.14 α = 90
b = 72.14 β = 90
c = 94.37 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2000-04-21
Diffraction Radiation
Monochromator Protocol
-- MAD, SE-MET
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE F2 0.9789, 0.9793 CHESS F2

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
2.2 37 98.3 -- 0.059 -- 10.5 14644 14644 -- -- 22.7
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)
2.2 2.32 98.3 -- 0.289 2.6 5.3 14644

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
MAD 2.2 19.74 -- 0.0 -- 14613 729 98.3 -- 0.222 0.222 0.262 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 2.2 2.34 -- 110 2096 0.235 0.291 0.028 90.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 45.8
Anisotropic B[1][1] -3.05
Anisotropic B[1][2] 1.75
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -3.05
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 6.11
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.008
c_angle_deg 1.2
c_dihedral_angle_d 18.3
c_improper_angle_d 0.82
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.31
Luzzati Sigma A (R-Free Set) 0.22
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1819
Nucleic Acid Atoms 0
Heterogen Atoms 46
Solvent Atoms 90

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
SHAKE-N-BAKE, SHARP Structure Solution
CNS 1.1 Structure Refinement
Software
Software Name Purpose
DM model building
SNB model building
SHARP model building
SCALA data reduction
MOSFLM data collection
CNS version: 1.1 refinement