23ME | pdb_000023me

Crystal structure of SARS-CoV-2 main protease M49I/M165T mutant in complex with leritrelvir

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7VH8

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		289	0.2 M Magnesium chloride hexahydrate, 20% w/v Polyethylene glycol 3,350

Crystal Properties
Matthews coefficient	Solvent content
2.06	40.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.427	α = 90
b = 106.197	β = 103.173
c = 54.289	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	PIXEL	DECTRIS PILATUS3 6M		2024-09-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL19U1	0.97923	SSRF	BL19U1

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	53.1	91.3	0.105	0.998	16.7	6.5		32890

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	2.05			1.26	0.772	2.3

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 (All)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2	53.098	32727	1642	90.724	0.167	0.1642	0.1738	0.2197	0.2232	26.068

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]
-0.577		1.244	-0.753		0.674

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	15.987
r_dihedral_angle_6_deg	13.766
r_dihedral_angle_3_deg	12.363
r_lrange_it	7.257
r_dihedral_angle_1_deg	7.232
r_lrange_other	7.226
r_scangle_it	5.081
r_scangle_other	5.08
r_mcangle_it	3.502
r_mcangle_other	3.501
r_scbond_it	3.322
r_scbond_other	3.322
r_mcbond_it	2.405
r_mcbond_other	2.404
r_dihedral_angle_other_3_deg	1.676
r_angle_refined_deg	1.52
r_angle_other_deg	0.533
r_symmetry_nbd_refined	0.296
r_nbd_other	0.236
r_nbd_refined	0.209
r_symmetry_nbd_other	0.197
r_nbtor_refined	0.181
r_xyhbond_nbd_refined	0.146
r_symmetry_xyhbond_nbd_refined	0.141
r_symmetry_nbtor_other	0.084
r_chiral_restr	0.077
r_ncsr_local_group_1	0.077
r_bond_refined_d	0.007
r_gen_planes_refined	0.007
r_symmetry_xyhbond_nbd_other	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4711
Nucleic Acid Atoms
Solvent Atoms	418
Heterogen Atoms	108

Software

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