7R6X

SARS-CoV-2 spike receptor-binding domain (RBD) in complex with S2E12 Fab, S309 Fab, and S304 Fab

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293.15	Crystal 1: 0.09 M phosphate/citrate, pH 5.5, 27% v/v PEG Smear Low, 4% v/v polypropylene glycol 400, 0.02 M imidazole, pH 7, Crystal 2: 0.09 M phosphate/citrate, pH 5.5, 27% v/v PEG Smear Low, 0.01 M potassium/sodium phosphate, pH 7, 1% v/v PPGBA 230, 1.5% v/v PPGBA 400

Crystal Properties
Matthews coefficient	Solvent content
5.37	77.11

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 245.87	α = 90
b = 245.87	β = 90
c = 237.31	γ = 90

Symmetry
Space Group	I 41 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	CMOS	RDI CMOS_8M		2020-10-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	1.00003	ALS	4.2.2

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	2.93	49	100	0.295	0.3	0.056	0.998	13.3	28.9		77621

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	2.93	2.99	100		7.868	8.016	1.531	0.381		27.2

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	PDB entries 7JX3 and 7K3Q	2.95	40	71532	3806	98.95	0.2338	0.2323	0.2624	RANDOM	116.456

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]
-0.38			-0.38		0.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.193
r_dihedral_angle_4_deg	18.165
r_dihedral_angle_3_deg	16.945
r_dihedral_angle_1_deg	6.999
r_angle_refined_deg	0.936
r_chiral_restr	0.073
r_gen_planes_refined	0.004
r_bond_refined_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9101
Nucleic Acid Atoms
Solvent Atoms	3
Heterogen Atoms	16

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
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 R01GM133198.