Experiment: 9MI7

Crystal Structure of ADI-64597 ((human Fab, with substituted IgG1-CH1 (HC-L128R and K147R) and substituted kappa constant domain (LC-Q124E, V133Q, and T178R))

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5SX5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	295	ADI-64597 (human Fab) was received at concentration 16.5 mg/mL in a buffer containing 2 mM Tris-HCl pH 8.0 and 150 mM NaCl. PACT, BCS and JCSG+ screens (all from Molecular Dimensions Ltd.) were set up using a mosquito crystallisation robot (STP Labtech). Sitting drops of 150 nL protein and 150 nL reservoir solution were left to equilibrate against a 40 uL reservoir at 20 C. After a few days, needle-like crystals were obtained in several conditions. The crystal used for data collection was obtained in the BCS screen, condition B10 (0.1 M HEPES pH 7.5, 22% w/v PEG Smear Broad)

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.983	α = 90
b = 65.983	β = 90
c = 97.431	γ = 120

Symmetry
Space Group	P 31

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		2021-05-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX IV BEAMLINE BioMAX	0.9763	MAX IV	BioMAX

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	2.22	49.29	99.7	0.998	11.6	10.4		23297

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	2.22	2.3	97.6		0.542	1.4	10.5

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2.22	49.29	23297		97.6	0.18	0.1829	0.2302	0.233

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3240
Nucleic Acid Atoms
Solvent Atoms	51
Heterogen Atoms	15

Software

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