+Open data
-Basic information
Entry | Database: PDB / ID: 2atp | ||||||
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Title | Crystal structure of a CD8ab heterodimer | ||||||
Components |
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Keywords | IMMUNE SYSTEM / CD8ab / CD8aa / MHC | ||||||
Function / homology | Function and homology information cytotoxic T cell differentiation / MHC class I protein complex binding / T cell mediated immunity / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / plasma membrane raft / MHC class I protein binding / coreceptor activity / positive regulation of calcium-mediated signaling / T cell activation / calcium-mediated signaling ...cytotoxic T cell differentiation / MHC class I protein complex binding / T cell mediated immunity / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / plasma membrane raft / MHC class I protein binding / coreceptor activity / positive regulation of calcium-mediated signaling / T cell activation / calcium-mediated signaling / T cell receptor signaling pathway / defense response to virus / adaptive immune response / cell surface receptor signaling pathway / receptor complex / external side of plasma membrane / protein kinase binding / cell surface / identical protein binding / plasma membrane Similarity search - Function | ||||||
Biological species | Mus musculus (house mouse) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.4 Å | ||||||
Authors | Chang, H.C. / Tan, K. / Ouyang, J. / Parisini, E. / Liu, J.H. / Le, Y. / Wang, X. / Reinherz, E.L. / Wang, J.H. | ||||||
Citation | Journal: Immunity / Year: 2005 Title: Structural and Mutational Analyses of a CD8alphabeta Heterodimer and Comparison with the CD8alphaalpha Homodimer. Authors: Chang, H.C. / Tan, K. / Ouyang, J. / Parisini, E. / Liu, J.H. / Le, Y. / Wang, X. / Reinherz, E.L. / Wang, J.H. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 2atp.cif.gz | 109.5 KB | Display | PDBx/mmCIF format |
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PDB format | pdb2atp.ent.gz | 83.9 KB | Display | PDB format |
PDBx/mmJSON format | 2atp.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/at/2atp ftp://data.pdbj.org/pub/pdb/validation_reports/at/2atp | HTTPS FTP |
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-Related structure data
Related structure data | 1bqhS 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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2 |
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Unit cell |
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-Components
#1: Protein | Mass: 13842.911 Da / Num. of mol.: 2 / Fragment: CD8a ectodomain fragment Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Gene: Cd8a, Lyt-2, Lyt2 / Plasmid: pEE14 / Production host: Cricetulus griseus (Chinese hamster) / Strain (production host): CHO-Lec 3.8.2.1 / References: UniProt: P01731 #2: Protein/peptide | Mass: 3028.172 Da / Num. of mol.: 2 Fragment: a peptide used to connect CD8a C-terminal and CD8b N-terminal Source method: obtained synthetically / Details: synthetic linker #3: Protein | Mass: 13038.967 Da / Num. of mol.: 2 / Fragment: CD8b ectodomain fragment Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Gene: Cd8b, Lyt-3, Lyt3 / Plasmid: pEE14 / Production host: Cricetulus griseus (Chinese hamster) / Strain (production host): CHO-Lec 3.8.2.1 / References: UniProt: P10300 #4: Sugar | #5: 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: 2.3 Å3/Da / Density % sol: 46.2 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8.5 Details: 25% PEG4000, 0.2M (NH4)2SO4, 0.1 M Tris , pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
-Data collection
Diffraction | Mean temperature: 200 K |
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Diffraction source | Source: SYNCHROTRON / Site: APS / Beamline: 19-ID / Wavelength: 0.9791 Å |
Detector | Type: ADSC QUANTUM 315 / Detector: CCD / Date: Dec 5, 2004 |
Radiation | Monochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9791 Å / Relative weight: 1 |
Reflection | Resolution: 2.4→50 Å / Num. all: 21001 / Num. obs: 21001 / % possible obs: 99.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.5 % / Biso Wilson estimate: 51.2 Å2 / Rmerge(I) obs: 0.07 / Net I/σ(I): 17.8 |
Reflection shell | Resolution: 2.4→2.49 Å / Redundancy: 3.1 % / Rmerge(I) obs: 0.44 / Mean I/σ(I) obs: 2.1 / Num. unique all: 2071 / % possible all: 96.8 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB ENTRY 1BQH Resolution: 2.4→25 Å / Isotropic thermal model: Isotropic / σ(F): 1 / Stereochemistry target values: Engh & Huber
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Displacement parameters | Biso mean: 52.314 Å2 | |||||||||||||||||||||||||
Refine analyze | Luzzati coordinate error obs: 0.38 Å / Luzzati d res low obs: 5 Å / Luzzati sigma a obs: 0.6 Å | |||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.4→25 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.4→2.49 Å
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