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- PDB-6x4g: Crystal structure of ICOS in complex with ICOS-L and an anti ICOS... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6x4g | ||||||
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Title | Crystal structure of ICOS in complex with ICOS-L and an anti ICOS-L VNAR domain | ||||||
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![]() | IMMUNE SYSTEM / Immune checkpoint / receptors / glycoproteins / T-cell / B-cell | ||||||
Function / homology | ![]() T cell tolerance induction / T follicular helper cell differentiation / hyperosmotic response / Regulation of T cell activation by CD28 family / positive regulation of activated T cell proliferation / B cell activation / Nuclear events stimulated by ALK signaling in cancer / T cell costimulation / regulation of cytokine production / T cell activation ...T cell tolerance induction / T follicular helper cell differentiation / hyperosmotic response / Regulation of T cell activation by CD28 family / positive regulation of activated T cell proliferation / B cell activation / Nuclear events stimulated by ALK signaling in cancer / T cell costimulation / regulation of cytokine production / T cell activation / defense response / cell-cell adhesion / Constitutive Signaling by Aberrant PI3K in Cancer / PIP3 activates AKT signaling / signaling receptor activity / T cell receptor signaling pathway / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / adaptive immune response / immune response / receptor ligand activity / external side of plasma membrane / signaling receptor binding / intracellular membrane-bounded organelle / signal transduction / extracellular exosome / extracellular region / identical protein binding / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Rujas, E. / Sicard, T. / Julien, J.P. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structural characterization of the ICOS/ICOS-L immune complex reveals high molecular mimicry by therapeutic antibodies. Authors: Rujas, E. / Cui, H. / Sicard, T. / Semesi, A. / Julien, J.P. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 126.3 KB | Display | ![]() |
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PDB format | ![]() | 79.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 20 KB | Display | |
Data in CIF | ![]() | 26.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6x4tC ![]() 7jooC ![]() 1i8lS ![]() 1t6vS ![]() 4i0kS S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Unit cell |
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Components
-Protein , 2 types, 2 molecules AC
#1: Protein | Mass: 13412.229 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 26771.834 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Antibody / Non-polymers , 2 types, 2 molecules N

#3: Antibody | Mass: 13987.391 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: ![]() |
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#6: Chemical | ChemComp-GOL / |
-Sugars , 2 types, 8 molecules 
#4: Polysaccharide | Source method: isolated from a genetically manipulated source #5: Sugar | ChemComp-NAG / |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.1 Å3/Da / Density % sol: 60.29 % |
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Crystal grow | Temperature: 293.15 K / Method: vapor diffusion, sitting drop Details: 0.1 M HEPES, pH 7.0, and 30% (v/v) Jeffamine ED-2001 |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS PILATUS 6M / Detector: PIXEL / Date: May 21, 2019 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 3.3→40 Å / Num. obs: 10227 / % possible obs: 95.7 % / Redundancy: 11.8 % / CC1/2: 0.99 / Rmerge(I) obs: 0.27 / Rpim(I) all: 0.079 / Net I/σ(I): 10 |
Reflection shell | Resolution: 3.3→3.4 Å / Redundancy: 12.2 % / Rmerge(I) obs: 0.79 / Mean I/σ(I) obs: 1.7 / Num. unique obs: 406 / CC1/2: 0.63 / Rpim(I) all: 0.23 / % possible all: 97.9 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 1I8L, 4I0K, 1T6V Resolution: 3.5→39.73 Å / SU ML: 0.5761 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 26.9743 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 85.77 Å2 | ||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.5→39.73 Å
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Refine LS restraints |
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LS refinement shell |
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