Joint X-ray/neutron structure of HIV-1 protease triple mutant (V32I,I47V,V82I) with tetrahedral intermediate mimic KVS-1
X-RAY DIFFRACTION - NEUTRON DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) |
|---|
| Type | Source | Accession Code | Details |
|---|
|
experimental model | PDB | 3DCR | |
Crystallization
| Crystalization Experiments |
|---|
| ID | Method | pH | Temperature | Details |
|---|
| 1 | VAPOR DIFFUSION, SITTING DROP | 6 | 293 | 0.1 M MES, 1.0 M NaCl, pH 6.0 |
| Crystal Properties |
|---|
| Matthews coefficient | Solvent content |
|---|
| 2.83 | 56.58 |
Crystal Data
| Unit Cell |
|---|
| Length ( Å ) | Angle ( ˚ ) |
|---|
| a = 59.497 | α = 90 |
| b = 87.4 | β = 90 |
| c = 46.865 | γ = 90 |
| Symmetry |
|---|
| Space Group | P 21 21 2 |
|---|
Diffraction
| Diffraction Experiment |
|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol |
|---|
| 1 | 1 | x-ray | 293 | IMAGE PLATE | RIGAKU RAXIS IV++ | osmic varimax | 2016-10-05 | M | SINGLE WAVELENGTH |
| 2 | 1 | neutron | 293 | IMAGE PLATE | MAATEL | collimators | 2016-10-05 | L | LAUE |
| Radiation Source |
|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
|---|
| 1 | ROTATING ANODE | RIGAKU MICROMAX-007 HF | 1.54 | | |
| 2 | NUCLEAR REACTOR | | 2.80-4.0 | | LADI III |
Data Collection
| Overall |
|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | R Split (All) | 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 | 1.85 | 40 | 97.6 | 0.049 | | | | | | 25.3 | 3.9 | | 20942 | | | |
| 2 | 2.2 | 40 | 77.3 | 0.169 | | | | | | 7.1 | 3.1 | | 9666 | | | |
| Highest Resolution Shell |
|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) |
|---|
| 1 | 1.85 | 1.92 | | 0.489 | | | | | | 3 | 3.8 | |
| 2 | 2.2 | 2.32 | | 0.327 | | | | | | 3.4 | 3.2 | |
Refinement
| Statistics |
|---|
| Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B |
|---|
| X-RAY DIFFRACTION | | 1.85 | 40 | | 2.5 | | 18847 | 932 | 87.6 | | | 0.192 | 0.18 | 0.217 | 0.21 | RANDOM | 27.18 |
| NEUTRON DIFFRACTION | | 2.2 | 40 | | 2.5 | | 8840 | 429 | 67.9 | | | 0.234 | | 0.257 | | RANDOM | |
| 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] |
|---|
| | | | | |
| | | | | |
| RMS Deviations |
|---|
| Key | Refinement Restraint Deviation |
|---|
| x_torsion_deg | 18.2 |
| x_torsion_deg | 18.2 |
| x_torsion_impr_deg | 1.11 |
| x_torsion_impr_deg | 1.11 |
| x_angle_deg | 1 |
| x_angle_deg | 1 |
| x_bond_d | 0.017 |
| x_bond_d | 0.017 |
| Non-Hydrogen Atoms Used in Refinement |
|---|
| Non-Hydrogen Atoms | Number |
|---|
| Protein Atoms | 1514 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 104 |
| Heterogen Atoms | 56 |
Software
| Software |
|---|
| Software Name | Purpose |
|---|
| nCNS | refinement |
