6USX

Identification of the Clinical Development Candidate MRTX849, a Covalent KRASG12C Inhibitor for the Treatment of Cancer

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4L8G	4l8g.pdb

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.4	293	29% PEG8K 0.1M NaCitrate pH 5.4 0.2M Amm Acetate

Crystal Properties
Matthews coefficient	Solvent content
2.82	56.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.57	α = 90
b = 156.49	β = 90
c = 62.98	γ = 90

Symmetry
Space Group	C 2 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	100	PIXEL	DECTRIS PILATUS 2M	Osmic confocal mirrors	2019-01-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Rrim I (All)	Rpim I (All)	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	2.27	30	84.7	0.25	0.135	9.72	3.65		32164

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.27	2.42	69		0.25	0.135	4.7	3.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	4l8g.pdb	2.27	29.51	18040	980	87.31	0.191	0.1873	0.2498	Random	46.102

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]
-3.266			-0.484		3.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.579
r_dihedral_angle_4_deg	16.032
r_dihedral_angle_3_deg	15.048
r_lrange_other	8.929
r_lrange_it	8.798
r_scangle_other	7.624
r_scangle_it	7.49
r_dihedral_angle_1_deg	6.882
r_dihedral_angle_other_3_deg	5.658
r_mcangle_it	5.592
r_mcangle_other	5.591
r_scbond_other	5.45
r_scbond_it	5.411
r_mcbond_other	4.558
r_mcbond_it	4.557
r_angle_refined_deg	1.945
r_angle_other_deg	1.34
r_nbd_other	0.211
r_nbd_refined	0.204
r_symmetry_nbd_other	0.179
r_nbtor_refined	0.175
r_symmetry_nbd_refined	0.166
r_xyhbond_nbd_refined	0.159
r_symmetry_xyhbond_nbd_refined	0.158
r_chiral_restr	0.085
r_symmetry_xyhbond_nbd_other	0.082
r_metal_ion_refined	0.077
r_symmetry_nbtor_other	0.075
r_bond_refined_d	0.011
r_gen_planes_refined	0.009
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2685
Nucleic Acid Atoms
Solvent Atoms	75
Heterogen Atoms	134

Software

Software
Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing