7T0R

Crystal structure of the anti-CD4 adnectin 6940_B01 as a complex with the extracellular domains of CD4 and ibalizumab fAb

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		295	0.01 M Na3 Citrate, 15.5% PEG3350, 0.3 M (NH4)2H Citrate, 0.1 M AmSO4

Crystal Properties
Matthews coefficient	Solvent content
2.83	56.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.51	α = 90
b = 164.014	β = 90
c = 167.053	γ = 90

Symmetry
Space Group	P 2 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	270	PIXEL	DECTRIS EIGER X 16M		2019-03-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	0.987	APS	22-ID

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	3.5	100	92.2	0.196	0.22	0.098	0.98	4.6	4.7		27334			70.88

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	3.5	3.56	79.8		0.792	0.893	0.402	0.667		4.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	FREE R-VALUE	3O2D	3.65	29.53	1.35	22506	1587	86.02	0.2304	0.2258	0.2923	RANDOM	69

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	5.379
f_angle_d	0.8335
f_chiral_restr	0.049
f_plane_restr	0.0061
f_bond_d	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12930
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	33

Software

Software
Software Name	Purpose
Coot	model building
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing
PDB_EXTRACT	data extraction

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.