2AV7

Crystal structure of HTLV-1 TAX peptide Bound to Human Class I MHC HLA-A2 with the K66A mutation in the heavy chain.

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1DUZ	PDB Entry 1DUZ

Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
2.5	49.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.32	α = 82.13
b = 62.532	β = 76.57
c = 74.801	γ = 78.06

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		2004-08-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	0.97925	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	2.05	20	95.5	0.075	10.5	1.9	56534	53990	1	1	19.9

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	2.05	2.12	83.7		0.28	2.34	1.7	4763

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 1DUZ	2.05	10	1	53796	49005	2612	95.95	0.17472	0.17472	0.17149	0.23408	RANDOM	14.881

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]
1.5	0.32	0.36	-0.78	0.19	-1.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.63
r_scangle_it	4.352
r_scbond_it	2.939
r_angle_refined_deg	1.943
r_mcangle_it	1.695
r_mcbond_it	0.962
r_symmetry_hbond_refined	0.219
r_xyhbond_nbd_refined	0.21
r_nbd_refined	0.157
r_chiral_restr	0.143

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.63
r_scangle_it	4.352
r_scbond_it	2.939
r_angle_refined_deg	1.943
r_mcangle_it	1.695
r_mcbond_it	0.962
r_symmetry_hbond_refined	0.219
r_xyhbond_nbd_refined	0.21
r_nbd_refined	0.157
r_chiral_restr	0.143
r_symmetry_vdw_refined	0.13
r_bond_refined_d	0.02
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6314
Nucleic Acid Atoms
Solvent Atoms	695
Heterogen Atoms	120

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
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.