Crystal Structure of human FABP4 in complex with 2-[5-methyl-2-(1-methylcyclohexyl)-1,3-oxazol-4-yl]acetic acid, i.e. SMILES C1(=NC(=C(O1)C)CC(=O)O)C1(CCCCC1)C with IC50=2.9 microM
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 7 | 293 | protein in 25mM Tris/HCl pH 7.5 100mM NaCl, see also PMID 27658368 |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.19 | 43.75 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 32.423 | α = 90 |
| b = 54.013 | β = 90 |
| c = 75.029 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 100 | PIXEL | PSI PILATUS 6M | 2012-02-05 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SLS BEAMLINE X10SA | 0.700030 | SLS | X10SA |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Rrim I (All) | CC (Half) | 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 | 1.08 | 30.81 | 99 | 0.1 | 0.1 | 0.103 | 0.997 | 8.02 | 5.43 | 56868 | 13.72 | ||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
| 1 | 1.08 | 1.11 | 99.2 | 1.104 | 1.223 | 0.607 | 1.63 | 5.299 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | 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 | THROUGHOUT | inhouse model | 1.08 | 30.82 | 51824 | 2784 | 95.23 | 0.1577 | 0.1558 | 0.1554 | 0.1929 | 0.1923 | RANDOM | 13.308 | ||||
| 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] | |
| 0.09 | -0.93 | 0.84 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 28.475 |
| r_sphericity_free | 24.968 |
| r_dihedral_angle_4_deg | 15.272 |
| r_dihedral_angle_3_deg | 14.175 |
| r_sphericity_bonded | 10.87 |
| r_dihedral_angle_1_deg | 7.068 |
| r_rigid_bond_restr | 5.544 |
| r_angle_refined_deg | 2.203 |
| r_angle_other_deg | 1.013 |
| r_chiral_restr | 0.151 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1046 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 221 |
| Heterogen Atoms | 49 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| XSCALE | data scaling |
| REFMAC | refinement |
| PDB_EXTRACT | data extraction |
| XDS | data reduction |
| PHASER | phasing |














