X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Slow Cooling
pH 6.5
Temperature 298.0
Details 30 mg insulin, 3.0 ml 0.02 M HCl, 0.3 ml 0.15 M Zinc Acetate, 1.5 ml 0.2 M Sodium Citrate, 1.2 ml 5% m-Cresol in ethanol, pH 6.5, SLOW COOLING, temperature 298.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 61.25 α = 90
b = 61.74 β = 111.32
c = 47.47 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IV OSMIC CONFOCAL MIRRORS 2000-01-18
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 -- -- --

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 20.95 92.6 0.039 -- -- 6.15 28441 28441 0.0 0.0 30.6
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)
1.89 1.94 92.6 0.287 -- 5.4 2.2 --

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
-- 1.9 20.95 0.0 0.0 25127 25127 2490 96.3 0.195 0.195 0.195 0.235 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 1.9 2.02 -- 388 3678 0.271 0.333 0.017 93.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model restrained
Mean Isotropic B 33.7
Anisotropic B[1][1] -0.84
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 1.98
Anisotropic B[2][2] -5.09
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 5.93
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.38
c_improper_angle_d 0.86
c_dihedral_angle_d 20.8
c_bond_d 0.009
c_scangle_it 3.82
c_mcbond_it 1.86
c_mcangle_it 2.74
c_scbond_it 2.59
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.21
Luzzati Sigma A (Observed) 0.17
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.27
Luzzati Sigma A (R-Free Set) 0.22
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2408
Nucleic Acid Atoms 0
Heterogen Atoms 69
Solvent Atoms 240

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
CNS refinement version: 1.0
CNS phasing version: 1.0