Crystal Structure of HLA class II major histocompatibility complex bound to HCMV-IE1 peptide


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1A6A 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP29316% w/v PEG 8000, 40 mM potassium dihydrogen phosphate, and 20% v/v glycerol
Crystal Properties
Matthews coefficientSolvent content
2.754.53

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 71.27α = 90
b = 96.18β = 92.66
c = 160.09γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2024-07-19MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSOLEIL BEAMLINE PROXIMA 20.9537SOLEILPROXIMA 2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Rrim I (All)CC (Half)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
12.42648.0999.80.1030.9914.987.018178451.74
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Rrim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.432.4599.21.1920.7651.56.83

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)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)R-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT2.42635.381764408999.80.22560.22470.21160.24360.2331RANDOM62.94
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]
-12.079614.45339.87462.205
RMS Deviations
KeyRefinement Restraint Deviation
t_other_torsion16.67
t_omega_torsion3.25
t_angle_deg0.87
t_bond_d0.007
t_dihedral_angle_d
t_gen_planes
t_it
t_chiral_improper_torsion
t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms12534
Nucleic Acid Atoms
Solvent Atoms143
Heterogen Atoms81

Software

Software
Software NamePurpose
BUSTERrefinement
XDSdata reduction
PHASERphasing
MxCuBEdata collection
Cootmodel building