2PYE

Crystal Structures of High Affinity Human T-Cell Receptors Bound to pMHC RevealNative Diagonal Binding Geometry TCR Clone C5C1 Complexed with MHC

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	291	85 mM Na HEPES buffer pH7.5, 8.5 % iso-propanol, 17% PEG 4000, 15% glycerol, pH 7.50, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.51	51.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.752	α = 90
b = 52.907	β = 97.94
c = 119.904	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	CCD	ADSC QUANTUM 4	MIRROR + MONOCHROMATOR	2005-07-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX14.2		SRS	PX14.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.3	118.68	91.3	0.151	0.151	4.4	2.9		38083

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.42	84.6		0.794	0.052	1.3	2.8	1337

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	2F53	2.3	118.68	36136	1918		0.19642	0.19172	0.28333	RANDOM	16.258

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]
0.14		2.21	1.4		-0.93

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	20.749
r_scangle_it	8.987
r_dihedral_angle_3_deg	7.78
r_scbond_it	6.937
r_dihedral_angle_4_deg	5.942
r_mcangle_it	4.843
r_mcbond_it	3.443
r_dihedral_angle_1_deg	1.632
r_angle_refined_deg	1.497
r_mcbond_other	0.985
r_angle_other_deg	0.88
r_symmetry_hbond_refined	0.202
r_xyhbond_nbd_refined	0.197
r_symmetry_vdw_other	0.191
r_nbd_other	0.184
r_nbtor_refined	0.177
r_nbd_refined	0.174
r_symmetry_vdw_refined	0.166
r_chiral_restr	0.09
r_nbtor_other	0.085
r_xyhbond_nbd_other	0.056
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
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	6566
Nucleic Acid Atoms
Solvent Atoms	394
Heterogen Atoms	162

Software

Software
Software Name	Purpose
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction