3SO3

Structures of Fab-Protease Complexes Reveal a Highly Specific Non-Canonical Mechanism of Inhibition.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293	16% PEG 3350, 0.23 M MgSO4, 0.4% isopropanol, 3% glycerol, 0.12 M AMSO4, vapor diffusion, hanging drop, temperature 293k, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
3.23	61.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 130.598	α = 90
b = 130.598	β = 90
c = 96.941	γ = 120

Symmetry
Space Group	P 64

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 315	KOHZU: DOUBLE CRYSTAL SI(111)	2007-09-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.5418	ALS	8.3.1

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	2.1	113	100	0.087	0.094	11.7	7.3	56788	54872	2		54.04

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	2.1	2.21	100		0.863	0.932	2.2	6.9

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	PDB ENTRY 1EAX	2.1	19.88	56788	51934	2774	99.7	0.162	0.161	0.194	RANDOM	61.253

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]
-0.53	-0.27		-0.53		0.8

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.432
r_dihedral_angle_4_deg	19.438
r_dihedral_angle_3_deg	13.67
r_dihedral_angle_1_deg	6.649
r_scangle_it	3.174
r_rigid_bond_restr	2.378
r_scbond_it	2.259
r_angle_refined_deg	1.637
r_mcangle_it	1.303
r_mcbond_it	1.08
r_angle_other_deg	0.918
r_symmetry_hbond_refined	0.241
r_symmetry_vdw_other	0.213
r_mcbond_other	0.209
r_nbd_other	0.202
r_nbd_refined	0.19
r_nbtor_refined	0.179
r_xyhbond_nbd_refined	0.173
r_symmetry_vdw_refined	0.138
r_chiral_restr	0.098
r_nbtor_other	0.09
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5106
Nucleic Acid Atoms
Solvent Atoms	461
Heterogen Atoms	29

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
StructureStudio	data collection
SCALA	data scaling