X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.5
Details 100 MM SODIUM CITRATE, PH 5.5, 8% PEG6000, 1M LICL

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 124.15 α = 90.05
b = 140.86 β = 87.16
c = 167.08 γ = 75.63
Symmetry
Space Group P 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
-- ADSC Q-4 -- 2001-02-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X8C -- NSLS X8C

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 20 88.2 0.082 -- -- 2.0 -- 334606 -- 2.0 17.4
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)
2.5 2.59 76.0 0.214 -- 3.6 2.0 --

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 2.5 10.0 -- 2.0 -- 309710 23235 83.0 -- 0.21 0.21 0.256 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 2.52 -- 350 4517 0.297 0.347 0.019 65.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 20.4
Anisotropic B[1][1] 14.02
Anisotropic B[1][2] -5.44
Anisotropic B[1][3] -0.31
Anisotropic B[2][2] -6.03
Anisotropic B[2][3] -0.39
Anisotropic B[3][3] -7.99
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.008
c_mcbond_it 0.95
c_scbond_it 1.72
c_scangle_it 2.49
c_angle_deg 1.3
c_mcangle_it 1.55
c_dihedral_angle_d 22.9
c_improper_angle_d 0.83
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.31
Luzzati Sigma A (Observed) 0.46
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.38
Luzzati Sigma A (R-Free Set) 0.52
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 69521
Nucleic Acid Atoms 0
Heterogen Atoms 949
Solvent Atoms 1049

Software

Software
Software Name Purpose
CNS refinement
DENZO data reduction
SCALEPACK data scaling
COMO phasing