4U1L

HLA class I micropolymorphisms determine peptide-HLA landscape and dictate differential HIV-1 escape through identical epitopes

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	291	0.1 M TRIS pH 8.0, 15% PEG 4000 and 15% glycerol

Crystal Properties
Matthews coefficient	Solvent content
2.68	54.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.02	α = 91.13
b = 49.06	β = 93.53
c = 107.84	γ = 95.7

Symmetry
Space Group	P 1

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	PSI PILATUS 6M	mirrors	2012-06-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.9763	Diamond	I03

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.06	53.8	97.7	0.102	0.092	0.986	5.8	2		56594

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.06	2.11	96.9		0.407	0.367	0.811	2.3	2	4139

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	THROUGHOUT	4I4W	2.06	53.8	56593	2874	97.74	0.1746	0.1727	0.2087	RANDOM	48.678

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]
-0.65	0.06	-0.52	-1.47	-0.37	2.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.423
r_dihedral_angle_4_deg	19.223
r_dihedral_angle_3_deg	18.116
r_dihedral_angle_1_deg	7.132
r_mcangle_it	4.314
r_mcbond_it	2.855
r_mcbond_other	2.855
r_angle_refined_deg	1.848
r_angle_other_deg	1.185
r_chiral_restr	0.108

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.423
r_dihedral_angle_4_deg	19.223
r_dihedral_angle_3_deg	18.116
r_dihedral_angle_1_deg	7.132
r_mcangle_it	4.314
r_mcbond_it	2.855
r_mcbond_other	2.855
r_angle_refined_deg	1.848
r_angle_other_deg	1.185
r_chiral_restr	0.108
r_bond_refined_d	0.017
r_gen_planes_refined	0.01
r_bond_other_d	0.005
r_gen_planes_other	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6348
Nucleic Acid Atoms
Solvent Atoms	326
Heterogen Atoms	100

Software

Software
Software Name	Purpose
XDS	data reduction
Aimless	data scaling
PDB_EXTRACT	data extraction
PHASER	phasing
REFMAC	refinement
GDA	data reduction

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.