2GIT

Human Class I MHC HLA-A2 in complex with the modified HTLV-1 TAX (Y5K-4-[3-Indolyl]-butyric acid) peptide

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2AV1	PDB ENTRY 2AV1

Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.384	α = 82
b = 62.709	β = 76.22
c = 74.773	γ = 78.18

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	MARMOSAIC 300 mm CCD		2005-11-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	0.979	APS	23-ID-D

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	1.7	20	91.8	0.087	14	1.9	94809	87035	1	1	18

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	1.7	1.76	66.2		0.239	3.13	1.7	6273

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	1.7	20	1	95058	82640	4395	91.56	0.18191	0.18191	0.17985	0.21947	RANDOM; 5% of the data set	11.513

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]
1.93	0.47	0.66	-1.11	0.47	-1.46

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.237
r_dihedral_angle_4_deg	19.12
r_dihedral_angle_3_deg	14.733
r_dihedral_angle_1_deg	6.356
r_scangle_it	4.333
r_scbond_it	2.771
r_angle_refined_deg	1.729
r_mcangle_it	1.664
r_mcbond_it	0.947
r_nbtor_refined	0.311

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.237
r_dihedral_angle_4_deg	19.12
r_dihedral_angle_3_deg	14.733
r_dihedral_angle_1_deg	6.356
r_scangle_it	4.333
r_scbond_it	2.771
r_angle_refined_deg	1.729
r_mcangle_it	1.664
r_mcbond_it	0.947
r_nbtor_refined	0.311
r_xyhbond_nbd_refined	0.205
r_symmetry_hbond_refined	0.181
r_nbd_refined	0.155
r_chiral_restr	0.142
r_metal_ion_refined	0.123
r_symmetry_vdw_refined	0.109
r_bond_refined_d	0.016
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6313
Nucleic Acid Atoms
Solvent Atoms	788
Heterogen Atoms	64

Software

Software
Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
HKL-2000	data scaling
MOLREP	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.