4HFP

Structure of thrombin mutant S195a bound to the active site inhibitor argatroban

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SHH

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	295	100mM Na acetate pH 4.6 and 25% PEG 8000, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.12	41.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.229	α = 90
b = 77.229	β = 90
c = 94.875	γ = 90

Symmetry
Space Group	P 41

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV++		2012-06-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	40.42	98.9	0.107	13.9	6.3	21851	21611	-0.2	-0.2

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	2.44	91.5		0.362	2.8	3.1	990

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	MOLECULAR REPLACEMENT	THROUGHOUT	1SHH	2.4	40.42	20733	20437	1105	98.57	0.17049	0.167	0.23805	RANDOM	55.751

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]
3.77			3.77		-7.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.848
r_dihedral_angle_3_deg	17.231
r_dihedral_angle_4_deg	14.425
r_dihedral_angle_1_deg	5.169
r_angle_refined_deg	0.994
r_scangle_it	0.636
r_scbond_it	0.401
r_mcangle_it	0.258
r_mcbond_it	0.141
r_chiral_restr	0.066
r_bond_refined_d	0.006
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4637
Nucleic Acid Atoms
Solvent Atoms	66
Heterogen Atoms	72

Software

Software
Software Name	Purpose
CrystalClear	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling