X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.2
Details PROTEIN SOLUTION: 20 MG/ML OF QUATERNARY COMPLEX IN 20MM TRIS-HCL AT PH 7.4 WELL SOLUTION: 0.1M NA-ACETATE AT PH 5.2, 2.5 M NA-FORMIAT, 15% GLYCEROL HANGING DROPS WITH 2MUL + 2 MUL

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 50.7 α = 90
b = 41.1 β = 109.4
c = 51.5 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MAR scanner 345 mm plate COSMIC MIRRORS CMF12-38CU6 2001-05-15
Diffraction Radiation
Monochromator Protocol
COSMIC MIRRORS CMF12-38CU6 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE SIEMENS M18X -- -- --

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
1.9 15 93.7 0.0345 -- -- 5.5 -- 71259 -- -- 14.3
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)
1.9 2.0 88.8 0.137 -- 11.35 4.6 --

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 14.9 -- 0.0 -- 14797 737 92.7 -- 0.176 0.176 0.224 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 -- 118 2143 0.196 0.266 0.025 85.6
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 22.1
Anisotropic B[1][1] 7.34
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 1.15
Anisotropic B[2][2] -2.53
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -4.81
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 13.8
c_mcangle_it 2.58
c_mcbond_it 1.12
c_scbond_it 1.71
c_angle_deg 0.8
c_improper_angle_d 0.58
c_bond_d 0.004
c_scangle_it 3.98
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.09
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.19
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1796
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 234

Software

Software
Software Name Purpose
CNS refinement version: 1.0
DENZO data reduction
SCALEPACK data scaling
EPMR phasing