4BTU

Factor Xa in complex with the dual thrombin-FXa inhibitor 57.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		IN-HOUSE FACTOR XA STRUCTURE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.7		PROTEIN SOLUTION: 8 MG/ML REMARK 280 DESGLA FACTOR XA, 5 MM MES (PH 6.0), 5 MM CACL2, 100 MM REMARK 280 BENZAMIDINE. RESERVOIR SOLUTION: 18-20% PEG600, 50 MM MES REMARK 280 (PH 5.7). HANGING DROP SETUP.

Crystal Properties
Matthews coefficient	Solvent content
2.42	49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.76	α = 90
b = 55.76	β = 90
c = 173.14	γ = 120

Symmetry
Space Group	P 32

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARRESEARCH		2007-04-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-2		ESRF	ID23-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.37	55.76	100	0.09	9.4	3.2		24437		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.37	2.45	100		0.41	2.8	3.1

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	IN-HOUSE FACTOR XA STRUCTURE	2.37	46.51	23315	1117	99.96	0.17284	0.16932	0.24761	RANDOM	40.682

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]
-0.8			-0.8		1.6

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.589
r_dihedral_angle_3_deg	14.391
r_dihedral_angle_4_deg	12.959
r_dihedral_angle_1_deg	4.465
r_angle_refined_deg	0.968
r_chiral_restr	0.056
r_bond_refined_d	0.005
r_gen_planes_refined	0.002
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4498
Nucleic Acid Atoms
Solvent Atoms	566
Heterogen Atoms	80

Software

Software
Software Name	Purpose
REFMAC	refinement