Crystal Structure of human FABP4 in complex with 5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one, i.e. SMILES c1(cccc(c1C)Cl)OCC1=CC(=O)N2N=C(c3ccccc3)N=C2N1 with IC50=0.061 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 |
| 3.57 | 65.57 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 137.087 | α = 90 |
| b = 137.087 | β = 90 |
| c = 137.087 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 4 3 2 |
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 | 2010-09-20 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SLS BEAMLINE X10SA | 0.999900 | SLS | X10SA |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge 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 | 2.6 | 48.47 | 99.9 | 0.269 | 0.272 | 0.998 | 16.84 | 38.413 | 14140 | 66.444 | |||||||||
| 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 | 2.6 | 2.67 | 99.9 | 4.777 | 4.838 | 0.359 | 0.95 | 40.307 | |||||||||||
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 | 2.6 | 48.47 | 12800 | 678 | 95.27 | 0.2006 | 0.1975 | 0.2037 | 0.2578 | 0.2468 | RANDOM | 63.286 | ||||
| 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 |
| r_dihedral_angle_3_deg | 18.117 |
| r_dihedral_angle_2_deg | 8.993 |
| r_dihedral_angle_1_deg | 8.101 |
| r_mcangle_it | 6.626 |
| r_mcbond_it | 4.459 |
| r_mcbond_other | 4.459 |
| r_angle_refined_deg | 1.771 |
| r_angle_other_deg | 0.547 |
| r_chiral_restr | 0.067 |
| r_bond_refined_d | 0.009 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2098 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 3 |
| Heterogen Atoms | 77 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| XSCALE | data scaling |
| REFMAC | refinement |
| PDB_EXTRACT | data extraction |
| XDS | data reduction |
| PHASER | phasing |














