3FOM

Crystal structure of the Class I MHC Molecule H-2Kwm7 with a Single Self Peptide IQQSIERL

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	25% PEG 3350, 200 mM ammonium sulfate, 100 mM Tris, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3	58.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 106.49	α = 90
b = 70.648	β = 104.21
c = 72.888	γ = 90

Symmetry
Space Group	C 1 2 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	CCD	ADSC QUANTUM 315		2007-01-05		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.979	NSLS	X29A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.1	50	90	0.048	20.722	2.8		27824

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1	2.14	58.4		0.363		1.7	908

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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		THROUGHOUT	2.1	19.82	27727	1404	90.33	0.225	0.222	0.289	RANDOM	31.017

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]
0.03		-0.03	0.03		-0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.82
r_dihedral_angle_4_deg	21.096
r_dihedral_angle_3_deg	17.605
r_dihedral_angle_1_deg	5.986
r_scbond_it	3.777
r_mcangle_it	2.42
r_angle_refined_deg	1.327
r_scangle_it	1.009
r_mcbond_it	0.971
r_chiral_restr	0.091

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.82
r_dihedral_angle_4_deg	21.096
r_dihedral_angle_3_deg	17.605
r_dihedral_angle_1_deg	5.986
r_scbond_it	3.777
r_mcangle_it	2.42
r_angle_refined_deg	1.327
r_scangle_it	1.009
r_mcbond_it	0.971
r_chiral_restr	0.091
r_bond_refined_d	0.011
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3117
Nucleic Acid Atoms
Solvent Atoms	218
Heterogen Atoms	1

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
PHASER	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.