4XXS

Crystal structure of BACE1 with a pyrazole-substituted tetrahydropyran thioamidine

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.6	291	BACE1 lacking the pro-segment was concentrated to ~14 mg/mL in 20 mM Tris pH 7.4 and 250 mM NaCl. Crystallization was carried out by the vapor diffusion method against 200 mM sodium citrate tribasic dihydrate, 22% PEG 5K monomethyl ether and 200 mM ammonium iodide.

Crystal Properties
Matthews coefficient	Solvent content
2.78	55.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 102.35	α = 90
b = 102.35	β = 90
c = 170.55	γ = 120

Symmetry
Space Group	P 61 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	83	PIXEL	DECTRIS PILATUS 6M		2012-03-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.0	APS	17-ID

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	1.86	50	99.8	0.121	4.9	17.2		44909			44.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.86	1.89	96.6			7.5	2132

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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		THROUGHOUT	1.86	27.23	44821	2255	99.68	0.1831	0.1818	0.2076	RANDOM	50.02

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]
4.5971			4.5971		-9.1941

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	16.47
t_omega_torsion	4.01
t_angle_deg	1.08
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	16.47
t_omega_torsion	4.01
t_angle_deg	1.08
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2941
Nucleic Acid Atoms
Solvent Atoms	299
Heterogen Atoms	51

Software

Software
Software Name	Purpose
HKL-2000	data reduction
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
HKL-2000	data scaling
BUSTER-TNT	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.