1MQ6
Crystal Structure of 3-chloro-N-[4-chloro-2-[[(5-chloro-2-pyridinyl)amino]carbonyl]-6-methoxyphenyl]-4-[[(4,5-dihydro-2-oxazolyl)methylamino]methyl]-2-thiophenecarboxamide Complexed with Human Factor Xa
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1FJS | PDB ENTRY 1FJS |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 293 | A THREE-FOLD EXCESS OF A PROPRIETARY FACTOR XA INHIBITOR WITH PICOMOLAR AFFINITY WAS ADDED TO THE DES-GLA-FACTOR XA. THIS INHIBITOR IS BASED ON THE SAME TEMPLATE AS XLD IN 1MQ6. THE PROTEIN WAS THEN CONCENTRATED TO 12-17 MG/ML. CRYSTALS WERE GROWN USING 2 UL OF COMPLEX WITH 2 UL OF RESERVOIR CONTAINING 15-21% PEG1500 AND 10 MM CACL2. 30-40 UL SITTING DROPS CONTAINING SATURATED INHIBITOR (5 MM) IN 21% PEG1500, 5 MM CACL2, 20 MM NACL, 25 MM TRIS PH 7.5 (CRYSTAL SOAKING SOLUTION) WERE EQUILIBRATED OVER A 1 ML RESERVOIR CONTAINING THE CRYSTAL SOAKING SOLUTION FOR 1 TO 2 DAYS. A SINGLE FACTOR XA CRYSTAL WAS TRANSFERRED USING A MOUNTED CRYOLOOP INTO ONE OF THESE SITTING DROPS AND ALLOWED TO SOAK FOR THREE OR MORE DAYS. AFTER THE INITIAL SOAK, EACH CRYSTAL WAS THEN TRANSFERRED TO AN UNUSED DROP AND ALLOWED TO SOAK FOR SECOND PERIOD OF THREE OR MORE DAYS. pH 7.50, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.44 | 51.2 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 56.64 | α = 90 |
b = 73.29 | β = 90 |
c = 79.02 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 4 | 2000-05-30 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | 1.033 | SSRL | BL9-2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 2.1 | 25 | 99.1 | 0.0673 | 8.5 | 3.54 | 19603 | 19603 | -3 | 56.09 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 2.1 | 2.23 | 98.4 | 0.3613 | 1.3 | 3.5 | 3162 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | DIRECT REPLACEMENT | PDB ENTRY 1FJS | 2.1 | 8 | 2 | 19603 | 17183 | 643 | 99.1 | 0.19 | 0.186 | 0.268 | RANDOM | 36.34 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-2.9499 | 8.6851 | -5.7351 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_angle_deg | 2.01 |
x_improper_angle_d | 1.59 |
x_bond_d | 0.011 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d | |
x_angle_d_na | |
x_angle_d_prot | |
x_angle_deg_na | |
x_angle_deg_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2220 |
Nucleic Acid Atoms | |
Solvent Atoms | 164 |
Heterogen Atoms | 55 |
Software
Software | |
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Software Name | Purpose |
Blu-Ice | data collection |
X-GEN | data reduction |
X-PLOR | model building |
X-PLOR | refinement |
X-GEN | data scaling |
X-PLOR | phasing |