X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8
Temperature 293.0
Details 40% PEG-400, 0.1 M Imidazole pH 8.0, VAPOR DIFFUSION, SITTING DROP, NANODROP, temperature 293K, pH 8.00

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 72.96 α = 90
b = 72.96 β = 90
c = 128.52 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 315 -- 2001-12-11
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL MONOCHROMATOR MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-2 0.97980, 0.93218, 0.97999 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
1.7 45.05 99.5 -- 0.07 -- 18.3 -- 39495 -- -- 23.99
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)
1.7 1.74 95.1 -- 0.506 2.8 8.2 --

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 1.8 20.0 -- 2.0 37372 37360 1914 100.0 -- 0.192 0.192 0.231 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 1.82 -- 47 912 0.2432 0.2985 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 27.7
Anisotropic B[1][1] -4.173
Anisotropic B[1][2] -1.479
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -4.173
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 8.345
RMS Deviations
Key Refinement Restraint Deviation
c_mcbond_it 1.935
c_scangle_it 4.141
c_scbond_it 3.224
c_bond_d 0.021
c_mcangle_it 2.512
c_angle_deg 1.94
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.216
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2517
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 294

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
CCP4, SOLVE, RESOLVE Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CCP4 data reduction
RESOLVE model building
SOLVE model building
MOSFLM data collection
CCP4 model building
CNS version: 1.0 refinement
SCALA data reduction