X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.5
Temperature 298.15
Details 4.6M Na-formate, 0.3M (NH4)2SO4, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298.15K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 74.84 α = 90
b = 96.04 β = 90
c = 108.1 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 103
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 315 -- 2006-08-31
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X25 1.0 NSLS X25

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
1.75 43.89 90.5 0.111 -- -- 6.0 38293 34646 3.0 3.0 17.6
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)
1.75 1.81 86.5 0.452 -- 3.94 2.7 3353

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 1.75 43.89 -- 2.0 38293 34646 1734 87.4 -- 0.196 0.196 0.232 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 1.75 1.86 4043 210 4043 0.214 0.241 0.017 65.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 26.6
Anisotropic B[1][1] 3.19
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 2.72
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -5.91
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 1.02
c_scbond_it 4.14
c_mcbond_it 2.98
c_dihedral_angle_d 26.2
c_mcangle_it 3.76
c_scangle_it 5.5
c_bond_d 0.014
c_angle_deg 1.7
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Sigma A (Observed) 0.09
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.24
Luzzati Sigma A (R-Free Set) 0.09
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2266
Nucleic Acid Atoms 0
Heterogen Atoms 5
Solvent Atoms 174

Software

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