Joint X-ray/neutron structure of human carbonic anhydrase II in complex with ethoxzolamide
X-RAY DIFFRACTION - NEUTRON DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) |
|---|
| Type | Source | Accession Code | Details |
|---|
|
experimental model | PDB | 5C8I | |
Crystallization
| Crystalization Experiments |
|---|
| ID | Method | pH | Temperature | Details |
|---|
| 1 | VAPOR DIFFUSION, SITTING DROP | | 293 | 1.6 M sodium citrate, 50 mM TRIS pH 8.0 |
| Crystal Properties |
|---|
| Matthews coefficient | Solvent content |
|---|
| 2.15 | 42.77 |
Crystal Data
| Unit Cell |
|---|
| Length ( Å ) | Angle ( ˚ ) |
|---|
| a = 42.8 | α = 90 |
| b = 41.7 | β = 104.6 |
| c = 72.9 | γ = 90 |
| Symmetry |
|---|
| Space Group | P 1 21 1 |
|---|
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++ | | | M | SINGLE WAVELENGTH |
| 2 | 1 | neutron | 293 | AREA DETECTOR | ORNL ANGER CAMERA | | 2016-08-18 | L | LAUE |
| Radiation Source |
|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
|---|
| 1 | ROTATING ANODE | RIGAKU MICROMAX-007 HF | 1.5418 | | |
| 2 | NUCLEAR REACTOR | ORNL Spallation Neutron Source BEAMLINE MANDI | 2-4 | ORNL Spallation Neutron Source | MANDI |
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 | 1.7 | 20 | 92.6 | 0.075 | | | | | | 13.2 | 3.8 | | 25630 | | | |
| 2 | 1.69 | 15.47 | 73.2 | 0.153 | | | | | | 10.3 | 3.3 | | 20440 | | | |
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 | MOLECULAR REPLACEMENT | 1.8 | 15.47 | | 2.5 | | 17706 | 1237 | 75.9 | | | 0.168 | 0.15 | 0.176 | 0.15 | 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] |
|---|
| | | | | |
| Non-Hydrogen Atoms Used in Refinement |
|---|
| Non-Hydrogen Atoms | Number |
|---|
| Protein Atoms | 2049 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 82 |
| Heterogen Atoms | 17 |
Software
| Software |
|---|
| Software Name | Purpose |
|---|
| nCNS | refinement |
