+Open data
-Basic information
Entry | Database: PDB / ID: 3osk | ||||||
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Title | Crystal structure of human CTLA-4 apo homodimer | ||||||
Components | Cytotoxic T-lymphocyte protein 4Cytotoxic T cell | ||||||
Keywords | IMMUNE SYSTEM / Beta sandwich / Homodimer / Immunoglobulin superfamily (beta sandwich) fold / Receptor / Signalling / B7-1(CD80) / B7-2(CD86) / Membrane | ||||||
Function / homology | Function and homology information protein complex involved in cell adhesion / negative regulation of regulatory T cell differentiation / RUNX1 and FOXP3 control the development of regulatory T lymphocytes (Tregs) / clathrin-coated endocytic vesicle / CTLA4 inhibitory signaling / negative regulation of B cell proliferation / negative regulation of T cell proliferation / B cell receptor signaling pathway / T cell receptor signaling pathway / adaptive immune response ...protein complex involved in cell adhesion / negative regulation of regulatory T cell differentiation / RUNX1 and FOXP3 control the development of regulatory T lymphocytes (Tregs) / clathrin-coated endocytic vesicle / CTLA4 inhibitory signaling / negative regulation of B cell proliferation / negative regulation of T cell proliferation / B cell receptor signaling pathway / T cell receptor signaling pathway / adaptive immune response / immune response / positive regulation of apoptotic process / external side of plasma membrane / DNA damage response / perinuclear region of cytoplasm / Golgi apparatus / plasma membrane Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å | ||||||
Authors | Yu, C. / Sonnen, A.F.-P. / Ikemizu, S. / Stuart, D.I. / Gilbert, R.J.C. / Davis, S.J. | ||||||
Citation | Journal: J.Biol.Chem. / Year: 2011 Title: Rigid-body ligand recognition drives cytotoxic T-lymphocyte antigen 4 (CTLA-4) receptor triggering Authors: Yu, C. / Sonnen, A.F.-P. / George, R. / Dessailly, B.H. / Stagg, L.J. / Evans, E.J. / Orengo, C.A. / Stuart, D.I. / Ladbury, J.E. / Ikemizu, S. / Gilbert, R.J.C. / Davis, S.J. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 3osk.cif.gz | 112.2 KB | Display | PDBx/mmCIF format |
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PDB format | pdb3osk.ent.gz | 86.1 KB | Display | PDB format |
PDBx/mmJSON format | 3osk.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/os/3osk ftp://data.pdbj.org/pub/pdb/validation_reports/os/3osk | HTTPS FTP |
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-Related structure data
Related structure data | 1i8lS S: Starting model for refinement |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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Unit cell |
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-Components
#1: Protein | Mass: 13976.938 Da / Num. of mol.: 2 / Fragment: Extracellular domain, UNP residues 36-161 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CD152, CTLA4 / Plasmid: pEE14 / Cell (production host): ovary cells / Production host: CRICETULUS GRISEUS (Chinese hamster) / Strain (production host): CHO-K1 / References: UniProt: P16410 #2: Sugar | #3: Chemical | #4: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 2.08 Å3/Da / Density % sol: 40.75 % |
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Crystal grow | Temperature: 295 K / Method: vapor diffusion, sitting drop / pH: 5.5 Details: 25% Polyethylene glycol 3350 (w/v), 100mM bis-Tris pH 5.5, 200mM ammonium acetate, VAPOR DIFFUSION, SITTING DROP, temperature 295K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: SYNCHROTRON / Site: Diamond / Beamline: I04 / Wavelength: 0.98 Å |
Detector | Type: ADSC QUANTUM 315r / Detector: CCD / Date: Oct 11, 2007 |
Radiation | Monochromator: Double crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.98 Å / Relative weight: 1 |
Reflection | Resolution: 1.8→30 Å / Num. all: 22222 / Num. obs: 22221 / % possible obs: 99 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / Rmerge(I) obs: 0.111 / Net I/σ(I): 10.33 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB ENTRY 1i8l, chain C Resolution: 1.8→27.012 Å / SU ML: 0.26 / σ(F): 2.03 / Phase error: 23.57 / Stereochemistry target values: ML
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 56.959 Å2 / ksol: 0.308 e/Å3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters |
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Refinement step | Cycle: LAST / Resolution: 1.8→27.012 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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