X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.5
Temperature 277.0
Details 20% PEG 3350, 0.2M ammonium citrate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 75.63 α = 90
b = 122.8 β = 90
c = 126.86 γ = 90
Symmetry
Space Group I 2 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 MIRRORS --
Diffraction Radiation
Monochromator Protocol
SI(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X4A -- NSLS X4A

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
2.5 30 99.9 0.087 -- -- 11.3 -- 20806 -- -- 37.1
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)
2.5 2.59 100.0 0.408 -- 5.644 10.4 --

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
SAD 2.5 28.18 -- 2.0 -- 19531 1905 93.7 -- 0.212 0.212 0.29 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 2.5 2.59 -- 160 1511 0.286 0.401 0.032 81.7
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 50.8
Anisotropic B[1][1] -13.94
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -3.62
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 17.56
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.87
c_mcangle_it 2.72
c_bond_d 0.007
c_dihedral_angle_d 23.9
c_scbond_it 2.05
c_angle_deg 1.4
c_mcbond_it 1.58
c_scangle_it 3.14
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.29
Luzzati Sigma A (Observed) 0.3
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.44
Luzzati Sigma A (R-Free Set) 0.43
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3936
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 148

Software

Software
Software Name Purpose
SnB phasing version: THEN SOLVE/RESOLVE
CNS refinement version: 1.1
ADSC data collection version: QUANTUM
DENZO data reduction
SCALEPACK data scaling
PATSOL phasing
SOLVE phasing
RESOLVE phasing