8TI4

monovalent bispecific IgG antibodies through novel electrostatic steering mutations at the CH1-CL interface

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4UB0

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		293	0.1 M Bis-Tris at pH 6.5, 25% w/v PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.269	α = 90
b = 78.815	β = 90
c = 80.925	γ = 90

Symmetry
Space Group	P 21 21 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 PILATUS 6M		2022-02-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL14-1	0.97946	SSRL	BL14-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	39.413	89.4	0.989	4.8	3.8		96578

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.03			0.662

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	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.1	39.413	27099	941	99.388	0.202	0.2007	0.2514	35.899

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]
-0.562			-2.651		3.213

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_6_deg	16.506
r_dihedral_angle_3_deg	15.308
r_dihedral_angle_2_deg	13.168
r_dihedral_angle_1_deg	7.687
r_lrange_it	7.039
r_lrange_other	7.024
r_scangle_it	5.254
r_scangle_other	5.253
r_mcangle_it	4.081
r_mcangle_other	4.08
r_scbond_it	3.475
r_scbond_other	3.473
r_mcbond_it	2.784
r_mcbond_other	2.784
r_angle_refined_deg	1.379
r_angle_other_deg	0.46
r_nbd_other	0.268
r_xyhbond_nbd_refined	0.255
r_symmetry_nbd_other	0.217
r_nbd_refined	0.204
r_symmetry_xyhbond_nbd_refined	0.185
r_nbtor_refined	0.178
r_symmetry_nbd_refined	0.107
r_symmetry_nbtor_other	0.088
r_chiral_restr	0.058
r_symmetry_xyhbond_nbd_other	0.055
r_bond_refined_d	0.006
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3229
Nucleic Acid Atoms
Solvent Atoms	130
Heterogen Atoms	6

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
MOLREP	phasing