3MRB

Crystal Structure of MHC class I HLA-A2 molecule complexed with HCMV pp65-495-503 nonapeptide A7H variant

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3GSO	PDB ENTRY 3GSO

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	12% PEG 6000, 0.1M NaCacodylate, 5mg/ml protein conc., pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.23

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.36	α = 90
b = 81.09	β = 112.93
c = 56.79	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		2006-07-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.93300	ESRF	ID14-2

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	1.4	50	96.5	0.066	13.07	4.21		84555		-3	21.14

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	1.4	1.45	95.1		0.32	3.2

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	PDB ENTRY 3GSO	1.4	15	82657	8201	94.54	0.214	0.212	0.244	RANDOM	18.341

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]
-0.32		-1.04	-0.59		0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.264
r_dihedral_angle_4_deg	15.364
r_dihedral_angle_3_deg	13.203
r_dihedral_angle_1_deg	5.912
r_scangle_it	2.433
r_mcangle_it	1.795
r_scbond_it	1.786
r_angle_refined_deg	1.295
r_mcbond_it	1.115
r_chiral_restr	0.089

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.264
r_dihedral_angle_4_deg	15.364
r_dihedral_angle_3_deg	13.203
r_dihedral_angle_1_deg	5.912
r_scangle_it	2.433
r_mcangle_it	1.795
r_scbond_it	1.786
r_angle_refined_deg	1.295
r_mcbond_it	1.115
r_chiral_restr	0.089
r_bond_refined_d	0.01
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3155
Nucleic Acid Atoms
Solvent Atoms	387
Heterogen Atoms

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
AMoRE	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.