4RIR

Structural Analysis of the Unmutated Ancestor of the HIV-1 Envelope V2 Region Antibody CH58 Isolated From an RV144 HIV-1 Vaccine Efficacy Trial Vaccinee and Associated with Decreased Transmission Risk

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	293	A drop composed of 0.3 ul protein and 0.3 ul 25 mM MES, pH 6.0, 1.5% PEG 3350 over a reservoir of 50 ul 24% PEG 3350, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.88	57.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.723	α = 90
b = 103.707	β = 100.45
c = 101.188	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	93	CCD	MARMOSAIC 225 mm CCD		2012-10-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-BM	1.0	APS	22-BM

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	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	2.5	50	97.4			34886	33979	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.54	93.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	2.5	25.915	34886	33979	1870	89.52	0.2242	0.2204	0.2888	randomized selection

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]
5.6455		-1.455	-4.2786		-1.3669

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.58
f_angle_d	0.943
f_chiral_restr	0.064
f_bond_d	0.005
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6578
Nucleic Acid Atoms
Solvent Atoms	112
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	model building
PHENIX	refinement
SERGUI	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	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 R01GM157729.