X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 3.9
Temperature 278.0
Details PEG4000, ammonium isobutyrate, sodium isobutyrate, pH 3.9, VAPOR DIFFUSION, HANGING DROP, temperature 278K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 77.35 α = 90
b = 116.58 β = 90
c = 78.72 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2001-05-26
Diffraction Radiation
Monochromator Protocol
Si 111 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON PHOTON FACTORY BEAMLINE BL-18B 1.0 Photon Factory BL-18B

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
1.6 21.72 99.9 0.082 0.082 -- 4.0 47219 47219 0.0 0.0 14.5
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)
1.6 1.69 99.9 0.412 0.412 1.8 4.0 6823

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 1.6 21.72 -- 0.0 47196 47196 2358 99.8 0.1896 0.1896 0.188 0.219 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 1.6 1.7 -- 381 7400 0.237 0.284 0.015 100.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 14.6
Anisotropic B[1][1] 0.63
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.4
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -0.23
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.76
c_angle_deg 1.3
c_bond_d 0.005
c_scbond_it 3.32
c_scangle_it 4.67
c_dihedral_angle_d 22.8
c_mcangle_it 2.29
c_mcbond_it 1.8
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.2
Luzzati Sigma A (R-Free Set) 0.15
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2139
Nucleic Acid Atoms 0
Heterogen Atoms 18
Solvent Atoms 385

Software

Software
Software Name Purpose
MOLREP phasing
CNS refinement version: 1.1
MOSFLM data reduction
CCP4 data scaling version: (SCALA)