6XY2

Crystal structure of CTLA-4 complexed with the Fab of HL32 antibody


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3OSK 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1BATCH MODE6.52931M Li2SO4, 1.5M NH4SO4, 0.1M Sodium citrate
Crystal Properties
Matthews coefficientSolvent content
5.577.62

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 163.862α = 90
b = 254.478β = 90
c = 66.935γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS3 S 6M2020-01-13MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRF BEAMLINE BL19U10.97892SSRFBL19U1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim 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
12.958599.90.1330.1420.0490.9927.47.929874100.72
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.953.111.8650.7720.3720.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation 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 REPLACEMENTFREE R-VALUE3OSK3.0575.331.3427133138099.690.25080.24860.292570
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]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d8.2759
f_angle_d0.5526
f_chiral_restr0.0453
f_plane_restr0.0042
f_bond_d0.0024
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4149
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms14

Software

Software
Software NamePurpose
REFMACrefinement
PHENIXrefinement
MOSFLMdata reduction
SCALEPACKdata scaling
PHASERphasing