6TDO

Crystal structure of the disulfide engineered HLA-A0201 molecule in complex with one GM dipeptide in the A pocket.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298	0.2 M magnesium acetate, 0.1 M sodium cacodylate pH 6.5, and 20% PEG 800

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.936	α = 90
b = 80.914	β = 112.74
c = 56.351	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	100	PIXEL	DECTRIS PILATUS3 6M		2018-12-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X13	0.987	EMBL/DESY, HAMBURG	X13

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.65	81	99.9	0.056	0.99	11.3	6.9		52645

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.65	1.69			0.78	0.49

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	6Q3K	1.65	51.97	49987	2607	99.85	0.1876	0.1857	0.2237	RANDOM	19.664

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]
0.12		-0.22	-0.21		0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.228
r_dihedral_angle_4_deg	18.086
r_dihedral_angle_3_deg	13.377
r_dihedral_angle_1_deg	6.906
r_angle_refined_deg	1.833
r_angle_other_deg	1.081
r_chiral_restr	0.096
r_bond_refined_d	0.015
r_gen_planes_refined	0.012
r_gen_planes_other	0.003

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.228
r_dihedral_angle_4_deg	18.086
r_dihedral_angle_3_deg	13.377
r_dihedral_angle_1_deg	6.906
r_angle_refined_deg	1.833
r_angle_other_deg	1.081
r_chiral_restr	0.096
r_bond_refined_d	0.015
r_gen_planes_refined	0.012
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3077
Nucleic Acid Atoms
Solvent Atoms	522
Heterogen Atoms	25

Software

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

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.