3H7B

Human Class I MHC HLA-A2 in complex with the Tel1p peptide

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	277	PEG3350 24%, MES 0.025M, NaCl 0.1M, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.324	α = 81.95
b = 63.063	β = 75.95
c = 74.877	γ = 77.88

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	CCD	CUSTOM-MADE		2007-06-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	0.98494	APS	19-BM

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	1.88	20	96.8	0.066	11.766	1.9	69668	67439	1	1	22.7

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	1.88	1.97	94.4		0.356	1.99	1.9	6629

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-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 2AV1	1.88	20	70539	67422	3396	95.58	0.195	0.195	0.192	0.242	RANDOM	26.217

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]
0.97	0.59	1.78	-0.69	0.16	-1.44

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.196
r_dihedral_angle_4_deg	19.734
r_dihedral_angle_3_deg	15.477
r_dihedral_angle_1_deg	6.696
r_scangle_it	2.299
r_mcangle_it	2.184
r_angle_refined_deg	1.717
r_scbond_it	1.548
r_mcbond_it	1.493
r_nbtor_refined	0.311
r_xyhbond_nbd_refined	0.211
r_symmetry_hbond_refined	0.196
r_nbd_refined	0.145
r_chiral_restr	0.127
r_symmetry_vdw_refined	0.098
r_bond_refined_d	0.016
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6334
Nucleic Acid Atoms
Solvent Atoms	622
Heterogen Atoms	48

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-2000	data reduction
HKL-2000	data scaling