2X4O

Crystal structure of MHC CLass I HLA-A2.1 bound to HIV-1 envelope peptide env120-128


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1EEYPDB ENTRY 1EEY

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.5pH 6.5
Crystal Properties
Matthews coefficientSolvent content
241.3

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 61.988α = 90
b = 81.904β = 90.87
c = 79.748γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC CCDMIRRORS2007-10-06MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID23-1ESRFID23-1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.381.9299.90.096.33.635564-3.731.89
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.32.4299.90.45.243.7

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 1EEY2.348.581.3735523199699.830.17840.17470.238936.55
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]
-1.29240.00734.2771-2.9847
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d19.332
f_angle_d1.426
f_chiral_restr0.153
f_bond_d0.008
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6304
Nucleic Acid Atoms
Solvent Atoms417
Heterogen Atoms84

Software

Software
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
TRUNCATEdata scaling
AMoREphasing