X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Temperature 293.0
Details 50% (v/v)PEG-200, 0.1M HEPES pH7.5, final pH7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 54.2 α = 90
b = 116.61 β = 90
c = 141.83 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2001-05-30
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL MONOCHROMATOR MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-2 -- SSRL BL9-2

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
2.25 20 99.1 -- 0.061 -- 3.4 -- 43752 -- 0.0 --
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)
2.25 2.27 100.0 -- -- -- -- --

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
MAD 2.25 20.0 -- 2.0 43450 43369 4409 99.0 -- 0.192 0.192 0.24 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 2.25 2.27 -- 77 -- 0.207 0.24 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 30.0
Anisotropic B[1][1] -9.296
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 3.164
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 6.132
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 3.51
c_scbond_it 2.379
c_mcangle_it 2.228
c_mcbond_it 1.398
c_bond_d 0.007
c_angle_deg 1.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.27
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6981
Nucleic Acid Atoms 0
Heterogen Atoms 212
Solvent Atoms 274

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
RESOLVE/SOLVE Structure Solution
CNS Structure Refinement
Software
Software Name Purpose
CNS refinement
SOLVE model building
RESOLVE model building
SCALA/CCP4 data reduction
MOSFLM data collection