Experiment: 8SSN

Abl kinase in complex with SKI and asciminib

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5MO4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291.15	Crystals of AblFL in complex with SKI and asciminib were obtained by combining 0.3 ul of 600 uM AblFL + 700 uM SKI + 700 uM asciminib (~32 mg/ml) in 5 percent DMSO with 0.4 ul reservoir of 0.1 M Tris-HCl pH 8 + 1.75 M Ammonium sulfate + 2 percent (v/v) polypropylene glycol 400 (PPG 400). The final stock of complex was concentrated from 1 uM AblFL with ~1.2 uM SKI/asciminib after incubation at 4 degree C for 6 h. Screening around this condition yielded crystals in a transparent diamond-shaped or plate-shaped crystals. Crystals were grown at 18 degree C by sitting drop for a few days. The crystals were transferred to a drop of fresh reservoir containing 20 percent Xylitol with matching concentration of inhibitors in 5 percent DMSO for few seconds for cryo-protection

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 92.478	α = 90
b = 103.213	β = 90
c = 107.963	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	PIXEL	DECTRIS PILATUS 6M		2022-06-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 2.0.1	1.04054	ALS	2.0.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.86	47.83	98.28	0.08614	0.997	4.93	2		24343			73.79

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.86	2.967			1.367	0.31	0.51

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2.86	47.83	1.33	23968	1189	98.3	0.3002	0.2977	0.2988	0.348	0.3507

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	5.753
f_angle_d	0.729
f_chiral_restr	0.045
f_plane_restr	0.006
f_bond_d	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6466
Nucleic Acid Atoms
Solvent Atoms	51
Heterogen Atoms	150

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing