X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.3
Details MICROBATCH METHOD UNDER OIL WAS USED. 15.1 MG/ML OF PROTEIN SOLUTION CONTAINING 0.02M DTT WAS MIXED WITH 1.65M SODIUM ACETATE AND 0.1M MES PH 6.3. THE CRYSTALLIZATION TEMPERATURE WAS 291 K. PARATONE-N OIL MIXED WITH 10% W/W OF GLYCEROL WAS USED FOR CRYOPROTECTION LIGAND BOUND CRYSTALS WERE OBTAINED BY 7 H SOAKING OF NATIVE CRYSTALS IN SOLUTION CONTAINING 1.2M SODIUM ACETATE PH 6.3, 20MM AMMONIUM SULFATE, 2MM MAGNESIUM SULFATE AND 5MM GUANOSINE

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 132.76 α = 90
b = 132.76 β = 90
c = 172.06 γ = 90
Symmetry
Space Group P 43 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU IMAGE PLATE, RAXIS-VII MIRRORS 2003-01-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU FR-D -- -- --

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
2.4 15 96.9 0.118 -- -- 4.99 -- 58580 -- -0.5 11.4
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)
2.4 2.49 92.7 0.332 -- 3.9 -- --

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 2.4 14.93 -- 0.0 -- 58461 2960 96.8 -- 0.221 0.221 0.286 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 2.4 2.55 -- 482 8749 0.297 0.358 0.016 93.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 27.5
Anisotropic B[1][1] -1.85
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -1.85
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 3.71
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 4.15
c_mcbond_it 2.07
c_mcangle_it 3.24
c_scbond_it 3.0
c_dihedral_angle_d 22.8
c_improper_angle_d 1.03
c_angle_deg 1.4
c_bond_d 0.007
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.31
Luzzati Sigma A (Observed) 0.39
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.41
Luzzati Sigma A (R-Free Set) 0.53
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 10716
Nucleic Acid Atoms 0
Heterogen Atoms 150
Solvent Atoms 258

Software

Software
Software Name Purpose
CNS refinement version: 1.1
HKL-2000 data reduction
HKL-2000 data scaling
CNS phasing