3CII

Structure of NKG2A/CD94 bound to HLA-E

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1KPR	1KPR, 1B6E
experimental model	PDB	1B6E	1KPR, 1B6E

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	1.8M ammonium sulfate, 0.3-0.7% sucrose, 100 mM Tris (8.0), VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
5.95	79.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 345.983	α = 90
b = 345.983	β = 90
c = 345.983	γ = 90

Symmetry
Space Group	I 41 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	103	CCD	ADSC QUANTUM 315		2006-09-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2		ALS	8.2.2

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	4.41	70	100	0.166	6.9	34.4		22619

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	4.4	4.56	100		0.489	1.03	26.3	2189

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1KPR, 1B6E	4.41	67.88	22600	21445	1155	99.95	0.32054	0.35529	RANDOM	97.161

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
r_dihedral_angle_2_deg	36.601
r_dihedral_angle_3_deg	18.979
r_dihedral_angle_4_deg	13.292
r_dihedral_angle_1_deg	6.202
r_angle_refined_deg	1.088
r_angle_other_deg	0.84
r_symmetry_vdw_other	0.257
r_scangle_it	0.251
r_nbd_refined	0.209
r_symmetry_vdw_refined	0.206
r_nbd_other	0.205
r_nbtor_refined	0.182
r_scbond_it	0.168
r_xyhbond_nbd_refined	0.162
r_mcangle_it	0.126
r_mcbond_it	0.089
r_nbtor_other	0.082
r_chiral_restr	0.066
r_mcbond_other	0.029
r_xyhbond_nbd_other	0.028
r_symmetry_hbond_refined	0.028
r_bond_refined_d	0.009
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10146
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing