7JYY

Crystal Structure of SARS-CoV-2 Nsp16/10 Heterodimer in Complex with (m7GpppA)pUpUpApApA (Cap-0) and S-Adenosylmethionine (SAM).

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6W4H

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.6	292	Protein: 5.3 mg/ml (nsp10/nsp16 1:1), 0.15M Sodium chloride, 0.01M Tris pH 7.5 , 2mM SAM, 1mM TCEP, 5% Glycerol; Screen: ComPAS (G5), 0.1M Sodium citrate pH 5.6, 1.0M Ammonium dihydrogen phosphate; Soak: 1.5 hours, 0.2mM [M7Gppp]rArUrUrArArA, 5mM SAM, 5mM Manganese chloride; Cryo: 4M Sodium formate.

Crystal Properties
Matthews coefficient	Solvent content
4.1	70

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 166.948	α = 90
b = 166.948	β = 90
c = 98.81	γ = 120

Symmetry
Space Group	P 32 2 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	MARMOSAIC 300 mm CCD	BE	2020-07-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.05	30	100	0.083	0.083	0.089	0.032	0.996	24.1	7.6		99216		-3	35.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.05	2.09	99.8		1.079	1.079	1.156	0.415	0.765	2.1	7.6

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	6w4h	2.05	29.97	94164	5028	99.88	0.1667	0.1658	0.1846	RANDOM	47.34

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]
0.63	0.31		0.63		-2.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.673
r_dihedral_angle_3_deg	8.87
r_dihedral_angle_4_deg	6.535
r_dihedral_angle_1_deg	2.85
r_angle_refined_deg	1.29
r_angle_other_deg	0.367
r_chiral_restr	0.057
r_gen_planes_refined	0.054
r_gen_planes_other	0.047
r_bond_refined_d	0.004

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.673
r_dihedral_angle_3_deg	8.87
r_dihedral_angle_4_deg	6.535
r_dihedral_angle_1_deg	2.85
r_angle_refined_deg	1.29
r_angle_other_deg	0.367
r_chiral_restr	0.057
r_gen_planes_refined	0.054
r_gen_planes_other	0.047
r_bond_refined_d	0.004
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6490
Nucleic Acid Atoms	190
Solvent Atoms	545
Heterogen Atoms	85

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-3000	data reduction
HKL-3000	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.