X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.5
Details 100 MM NA CITRATE PH 4.5, 17% PEG 2K MME, 10% GLYCEROL

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 67.67 α = 90
b = 67.67 β = 90
c = 50.2 γ = 120
Symmetry
Space Group P 31

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
-- -- -- 2000-10-15
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-1 -- ESRF ID14-1

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 20 99.5 -- 0.047 -- 4.0 -- 23850 -- -- 16.1
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 1.85 99.5 -- 0.198 3.6 4.0 --

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 1.8 20.0 -- 0.0 -- 23707 1213 99.5 -- 0.182 0.182 0.204 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 -- 210 3726 0.233 0.255 0.018 99.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 17.3
Anisotropic B[1][1] -1.09
Anisotropic B[1][2] 0.09
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -1.09
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 2.18
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 2.01
c_scangle_it 2.83
c_improper_angle_d 0.71
c_mcbond_it 0.91
c_mcangle_it 1.41
c_angle_deg 1.0
c_bond_d 0.005
c_dihedral_angle_d 18.9
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.08
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.21
Luzzati Sigma A (R-Free Set) 0.11
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1566
Nucleic Acid Atoms 0
Heterogen Atoms 13
Solvent Atoms 160

Software

Software
Software Name Purpose
CNS refinement version: 0.9
DENZO data reduction
CCP4 data scaling
MLPHARE phasing