3DM6

Beta-secretase 1 complexed with statine-based inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	299	16% PEG8000, 0.1M Citrate, 0.3M Lithium sulphate, 0.1M Sodium Chloride, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 299K

Crystal Properties
Matthews coefficient	Solvent content
3.16	61.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.435	α = 90
b = 103.017	β = 103.5
c = 103.11	γ = 90

Symmetry
Space Group	P 1 21 1

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			2006-11-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.9340	ESRF	ID14-1

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	2.6	100.504	97.8	0.054	0.054	9.6	3.9		51052	1.5	1.5

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)
	2.6	2.74	97.7		0.416	0.416	1.8	3.9	7378

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	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	2.6	63.76	1.5	52290	48421	2605	97.58	0.253	0.22586	0.2229	0.28131	RANDOM	65.052

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]
0.06		-0.04	-0.07		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.604
r_dihedral_angle_3_deg	19.248
r_dihedral_angle_4_deg	18.935
r_dihedral_angle_1_deg	6.967
r_scangle_it	2.278
r_angle_refined_deg	1.501
r_scbond_it	1.411
r_mcangle_it	1.358
r_mcbond_it	0.763
r_nbtor_refined	0.319
r_symmetry_vdw_refined	0.236
r_nbd_refined	0.223
r_symmetry_hbond_refined	0.169
r_xyhbond_nbd_refined	0.157
r_chiral_restr	0.101
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8704
Nucleic Acid Atoms
Solvent Atoms	44
Heterogen Atoms	186

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction