4A7I

Factor Xa in complex with a potent 2-amino-ethane sulfonamide inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.7		PROTEIN SOLUTION: 8 MG/ML PROTEIN, 5 MM MES (PH 5.7), 5 MM CACL2, 100 MM BENZAMIDINE. RESERVOIR: 18-20% PEG-600, 50 MM MES (PH 5.7). SOAKING: ADD 10 MM INHIBITOR.

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.253	α = 90
b = 72.042	β = 90
c = 77.416	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	CCD	ADSC QUANTUM 4r		2005-05-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-3		ESRF	ID14-3

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	2.4	19.66	99	0.04	21	3.6		12692		-3	45.9

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	2.4	2.48	100		0.2	6	3.5

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X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	UNPUBLISHED FACTOR XA STRUCTURE	2.4	200	12692	618	99.1	0.198	0.198	0.253	RANDOM	46.3

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]
0.102			0.276		-0.378

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	3.571
c_scbond_it	3.021
c_mcangle_it	2.316
c_mcbond_it	1.757
c_angle_deg	1.32328
c_bond_d	0.004679
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2247
Nucleic Acid Atoms
Solvent Atoms	206
Heterogen Atoms	25

Software

Software
Software Name	Purpose
CNS	refinement
XDS	data reduction
XSCALE	data scaling
CNX	phasing