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)
TypeSourceAccession CodeDetails
experimental modelPDB 1FJSPDB ENTRY 1FJS

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.5293A 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
Matthews coefficientSolvent content
2.4451.2

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 56.64α = 90
b = 73.29β = 90
c = 79.02γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42000-05-30MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL9-21.033SSRLBL9-2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.12599.10.06738.53.541960319603-356.09
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.12.2398.40.36131.33.53162

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONDIRECT REPLACEMENTPDB ENTRY 1FJS2.182196031718364399.10.190.1860.268RANDOM36.34
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]
-2.94998.6851-5.7351
RMS Deviations
KeyRefinement Restraint Deviation
x_angle_deg2.01
x_improper_angle_d1.59
x_bond_d0.011
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
RMS Deviations
KeyRefinement Restraint Deviation
x_angle_deg2.01
x_improper_angle_d1.59
x_bond_d0.011
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
x_dihedral_angle_d
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2220
Nucleic Acid Atoms
Solvent Atoms164
Heterogen Atoms55

Software

Software
Software NamePurpose
Blu-Icedata collection
X-GENdata reduction
X-PLORmodel building
X-PLORrefinement
X-GENdata scaling
X-PLORphasing