8TDU

STX-478, a Mutant-Selective, Allosteric Inhibitor bound to PI3Kalpha

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		298	0.1 M MES pH 6.8, 500mM NaCl, 8% w/v PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.79	55.96

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.34	α = 90
b = 124.72	β = 92.8
c = 165.84	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	RIGAKU JUPITER 210		2022-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL45XU	1.00000	SPring-8	BL45XU

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	3.11	48.77	100	0.088	0.095	0.036	0.999	14.4	6.9		63223

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.11	3.19		99.9	0.841	0.908	0.34	0.786		7.1

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	MOLECULAR REPLACEMENT	THROUGHOUT	3.11	48.77	60150	3067	99.95	0.21098	0.20812	0.26653	RANDOM	106.05

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]
4.54		0.33	-1.95		-2.62

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	15.963
r_long_range_B_refined	13.206
r_long_range_B_other	13.206
r_mcangle_other	9.367
r_mcangle_it	9.366
r_scangle_other	9.247
r_dihedral_angle_1_deg	6.654
r_mcbond_it	5.883
r_mcbond_other	5.879
r_scbond_it	5.528
r_scbond_other	5.527
r_dihedral_angle_2_deg	5.422
r_angle_refined_deg	0.97
r_angle_other_deg	0.345
r_chiral_restr	0.048
r_gen_planes_refined	0.004
r_bond_refined_d	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	20529
Nucleic Acid Atoms
Solvent Atoms	45
Heterogen Atoms	114

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
REFMAC	phasing
XDS	data reduction