1PXV

The staphostatin-staphopain complex: a forward binding inhibitor in complex with its target cysteine protease

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.3	294	2 M (NH4)2SO4 and 5% isopropanol, 100 mM guanidinium hydrochloride, pH 6.3, VAPOR DIFFUSION, SITTING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.83	56.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.485	α = 90
b = 94.966	β = 90
c = 110.927	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	MARRESEARCH		2003-01-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MPG/DESY, HAMBURG BEAMLINE BW6	1.05	MPG/DESY, HAMBURG	BW6

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.8	20.92	94.6	0.052	0.052	9.8		72496	66436			35

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.8	1.9	89.3		0.182	0.182	3.5	2.7	3959

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1CV8, 1NYC	1.8	10	64796	64796	3406	94.64	0.1921	0.1921	0.19055	0.22129	RANDOM	27.263

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]
0.21			0.36		-0.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.644
r_angle_other_deg	3.935
r_scangle_it	3.473
r_mcangle_it	3.032
r_scbond_it	2.272
r_mcbond_it	1.933
r_angle_refined_deg	1.565
r_symmetry_vdw_other	0.371
r_nbd_other	0.31
r_nbd_refined	0.24
r_symmetry_vdw_refined	0.222
r_symmetry_hbond_refined	0.206
r_xyhbond_nbd_refined	0.18
r_chiral_restr	0.117
r_nbtor_other	0.115
r_bond_refined_d	0.02
r_gen_planes_other	0.011
r_gen_planes_refined	0.008
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4816
Nucleic Acid Atoms
Solvent Atoms	458
Heterogen Atoms	29

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing
FFFEAR	phasing
ARP/wARP	model building