X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 277.0
Details PROTEIN SOLUTION: 7MGS/ML PROTEIN, 50 MM TRIS HCL (PH 8.0), 50 MM KCL, 2MM EDTA, 1MM DTT, 5MM 6-CL-IMP. WELL SOLUTION: 9% (W/V) PEG-800, 100 MM TRIS HCL (PH 8.0), 1.0 M LICL, 24 MM BETAMERCAPTOETHANOL (2+2 MICROLITER DROPS), pH 8.00, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 148.11 α = 90
b = 148.11 β = 90
c = 122.02 γ = 90
Symmetry
Space Group I 4

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 93
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD CUSTOM-MADE -- 2000-05-05
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE A1 -- CHESS A1

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 39.74 97.7 0.093 0.093 -- 3.0 44411 44411 0.0 0.0 28.0
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 2.64 93.7 0.366 0.366 1.9 2.8 --

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 39.74 0.0 0.0 44410 44410 4483 97.4 0.238 0.238 0.238 0.271 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 2.66 -- 723 6364 0.266 0.316 0.012 93.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 39.8
Anisotropic B[1][1] -0.22
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.22
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.44
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 25.6
c_angle_deg 1.5
c_scangle_it 3.17
c_mcbond_it 1.48
c_improper_angle_d 0.92
c_bond_d 0.007
c_scbond_it 2.13
c_mcangle_it 2.55
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.34
Luzzati Sigma A (Observed) 0.14
Luzzati Resolution Cutoff (Low) 6.0
Luzzati ESD (R-Free Set) 0.4
Luzzati Sigma A (R-Free Set) 0.24
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5878
Nucleic Acid Atoms 0
Heterogen Atoms 44
Solvent Atoms 294

Software

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