Experiment: 2X4R

Crystal structure of MHC CLass I HLA-A2.1 bound to Cytomegalovirus (CMV) pp65 epitope

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EEY	PDB ENTRY 1EEY

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		0.1 M MES PH 6.5, 20% PEG1500

Crystal Properties
Matthews coefficient	Solvent content
2	45.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.735	α = 90
b = 87.01	β = 90.04
c = 79.912	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 CCD	MIRRORS	2007-10-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1		ESRF	ID23-1

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	2.3	50	99.9	0.05	9.7	3.6		38302		-3.7	47.3

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	2.3	2.42	100		0.24	3.59	3.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1EEY	2.3	19.978	1.39	38228	2011	99.94	0.142	0.1407	0.1463	0.2197	0.1816	46.8

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]
-1.0204		-0.2951	3.1384		-2.1181

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	18.738
f_angle_d	1.073
f_chiral_restr	0.072
f_bond_d	0.007
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6298
Nucleic Acid Atoms
Solvent Atoms	368
Heterogen Atoms	54

Software

Software
Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
TRUNCATE	data scaling
AMoRE	phasing