3FHP
A neutron crystallographic analysis of a porcine 2Zn insulin at 2.0 A resolution
NEUTRON DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
---|---|---|---|
Type | Source | Accession Code | Details |
experimental model | PDB | 4INS | PDB ENTRY 4INS |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | LIQUID DIFFUSION | 6.3 | 293 | 2.3mg/ml insulin, 50mM sodium citrate, 6mM zinc acetate, 17% acetone, pH6.3, LIQUID DIFFUSION, temperature 293K |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 82.849 | α = 90 |
b = 82.849 | β = 90 |
c = 34.173 | γ = 120 |
Symmetry | |
---|---|
Space Group | H 3 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | neutron | 298 | IMAGE PLATE | MACSCIENCE | 2006-05-08 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | NUCLEAR REACTOR | JRR-3M BEAMLINE 1G-B | 2.6 | JRR-3M | 1G-B |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge 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 | 2 | 80 | 23.2 | 0.147 | 2.2 | 4824 | 4824 | 8.2 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 2 | 2.07 | 81.3 | 0.393 | 2.2 | 4824 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
NEUTRON DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 4INS | 2 | 41.43 | 3 | 4030 | 208 | 68.1 | 0.168 | 0.168 | 0.247 | RANDOM | 23.8 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
0.38 | 1.58 | 0.38 | -0.76 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 22.8 |
c_improper_angle_d | 7.75 |
c_mcangle_it | 2.35 |
c_scangle_it | 2.32 |
c_angle_deg | 1.7 |
c_scbond_it | 1.52 |
c_mcbond_it | 1.5 |
c_bond_d | 0.008 |
c_bond_d_na | |
c_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 806 |
Nucleic Acid Atoms | |
Solvent Atoms | 89 |
Heterogen Atoms | 2 |
Software
Software | |
---|---|
Software Name | Purpose |
DENZO | data reduction |
XFIT | data reduction |
CNS | refinement |
SCALEPACK | data scaling |
CNS | phasing |