X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.4
Details 15-30% T-BUTANOL, 50MM CITRATE BUFFER PH=5.2-5.4

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 89.72 α = 90
b = 99.11 β = 90
c = 101.29 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 -- 1998-08-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE F2 -- CHESS F2

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
1.8 25 96.3 0.074 0.074 -- 5.1 -- 40120 -- -- 22.7
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)
1.8 1.9 97.7 0.298 0.298 3.9 4.9 --

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 1.8 6.0 -- 0.0 -- 39102 1977 95.5 -- 0.178 0.178 0.222 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 1.8 1.91 -- 326 6019 0.234 0.303 0.017 93.7
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 27.6
Anisotropic B[1][1] 5.26
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -4.77
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -0.48
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 3.43
c_bond_d 0.012
c_scangle_it 4.8
c_angle_deg 2.2
c_mcbond_it 2.42
c_dihedral_angle_d 25.0
c_improper_angle_d 1.94
c_mcangle_it 3.04
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.1
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.16
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2786
Nucleic Acid Atoms 0
Heterogen Atoms 23
Solvent Atoms 213

Software

Software
Software Name Purpose
MOSFLM data reduction
SCALA data scaling
CNS refinement version: 0.4
CCP4 data scaling version: (SCALA)