8VTP

Structure of FabS1CE-EPR-1, a high affinity antibody for the erythropoeitin receptor

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other	Other		residues 1-126 and 1-127 (IMGT numbering) of Fab heavy chain and light chain, respectively, of D_1000281027
other	Other		residues 129-230 and 130-231 (IMGT numbering) of Fab heavy chain and light chain, respectively, of D_1000281027

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	298	0.1 M Ammonium Acetate, 0.1 M Bis Tris pH 5.5, 17% PEG10K

Crystal Properties
Matthews coefficient	Solvent content
3.35	63.23

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.75	α = 90
b = 72.938	β = 90
c = 129.581	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 EIGER2 X 16M	Mirrors	2023-03-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.97911	APS	24-ID-E

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	1.68	129.58	99.9	0.061	0.064	0.02	0.999	19.3	9.6		72770			31.44

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	1.68	1.71	98		1.902	2.041	0.723	0.352	0.8	7.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.77	64.79	1.36	62361	3046	99.93	0.1757	0.1747	0.195	39.47

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	15.7172
f_angle_d	0.9522
f_chiral_restr	0.0627
f_plane_restr	0.0098
f_bond_d	0.0076

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3247
Nucleic Acid Atoms
Solvent Atoms	368
Heterogen Atoms	96

Software

Software
Software Name	Purpose
PHENIX	refinement
autoPROC	data reduction
Aimless	data scaling
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.