7MSQ

Complex between the Fab arm of AB-3467 and the SARS-CoV-2 receptor binding domain (RBD)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7KZB	7kzb (RBD) and 7czx
experimental model	PDB	7CZX	7kzb (RBD) and 7czx

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.9	293	Protein complex (5 mg/mL in 25 mM Tris (pH 8.0), 200 mM NaCl) was mixed with an equal volume (2 uL) of well solution comprising 100 mM BisTrisPropane (pH 6.9), 800 mM KSCN, 10% (v/v) glycerol, and 18%(m/v) PEG8000

Crystal Properties
Matthews coefficient	Solvent content
2.65	53.51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.764	α = 90
b = 115.494	β = 90
c = 240.758	γ = 90

Symmetry
Space Group	C 2 2 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 EIGER X 16M		2021-04-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2	0.9537	Australian Synchrotron	MX2

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	2.29	48.15	99.8	0.075	0.078	0.021	0.999	22.5	13.7		68595

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	2.29	2.35	97.5		0.747	0.776	0.208	0.882		13.4

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	7kzb (RBD) and 7czx	2.29	48	65175	3368	99.78	0.1966	0.1942	0.2447	RANDOM	50.259

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]
-0.43			1.63		-1.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.401
r_dihedral_angle_4_deg	18.445
r_dihedral_angle_3_deg	15.177
r_dihedral_angle_1_deg	8.188
r_angle_refined_deg	1.722
r_angle_other_deg	1.323
r_chiral_restr	0.076
r_bond_refined_d	0.012
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	9674
Nucleic Acid Atoms
Solvent Atoms	164
Heterogen Atoms	88

Software

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