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- PDB-2x4p: Crystal structure of MHC CLass I HLA-A2.1 bound to a photocleavab... -
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Basic information
Entry | Database: PDB / ID: 2x4p | ||||||||||||
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Title | Crystal structure of MHC CLass I HLA-A2.1 bound to a photocleavable peptide | ||||||||||||
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![]() | IMMUNE SYSTEM / GLYCOPROTEIN / IMMUNOGLOBULIN DOMAIN / MATRIX (M1) | ||||||||||||
Function / homology | ![]() T cell mediated cytotoxicity directed against tumor cell target / positive regulation of memory T cell activation / TAP complex binding / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell proliferation / CD8 receptor binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / endoplasmic reticulum exit site ...T cell mediated cytotoxicity directed against tumor cell target / positive regulation of memory T cell activation / TAP complex binding / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell proliferation / CD8 receptor binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / endoplasmic reticulum exit site / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / TAP binding / protection from natural killer cell mediated cytotoxicity / beta-2-microglobulin binding / T cell receptor binding / detection of bacterium / positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / negative regulation of receptor binding / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / lumenal side of endoplasmic reticulum membrane / cellular response to iron ion / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / cellular response to iron(III) ion / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / negative regulation of forebrain neuron differentiation / regulation of erythrocyte differentiation / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / response to molecule of bacterial origin / MHC class I peptide loading complex / HFE-transferrin receptor complex / T cell mediated cytotoxicity / antigen processing and presentation of endogenous peptide antigen via MHC class I / positive regulation of T cell cytokine production / MHC class I protein complex / multicellular organismal-level iron ion homeostasis / negative regulation of neurogenesis / peptide antigen assembly with MHC class II protein complex / positive regulation of receptor-mediated endocytosis / MHC class II protein complex / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / specific granule lumen / recycling endosome membrane / phagocytic vesicle membrane / positive regulation of cellular senescence / peptide antigen binding / negative regulation of epithelial cell proliferation / antigen processing and presentation of exogenous peptide antigen via MHC class II / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / Interferon gamma signaling / positive regulation of immune response / Modulation by Mtb of host immune system / Interferon alpha/beta signaling / positive regulation of type II interferon production / sensory perception of smell / positive regulation of T cell activation / positive regulation of protein binding / tertiary granule lumen / E3 ubiquitin ligases ubiquitinate target proteins / DAP12 signaling / negative regulation of neuron projection development / MHC class II protein complex binding / late endosome membrane / T cell receptor signaling pathway / iron ion transport / ER-Phagosome pathway / early endosome membrane / antibacterial humoral response / T cell differentiation in thymus / protein refolding / protein homotetramerization / intracellular iron ion homeostasis / amyloid fibril formation / learning or memory / defense response to Gram-positive bacterium / immune response / Amyloid fiber formation / endoplasmic reticulum lumen / lysosomal membrane / external side of plasma membrane / Golgi membrane / innate immune response / focal adhesion / signaling receptor binding / Neutrophil degranulation / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / Golgi apparatus / cell surface / endoplasmic reticulum Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() ![]() | ||||||||||||
Method | ![]() ![]() ![]() | ||||||||||||
![]() | Celie, P.H.N. / Toebes, M. / Rodenko, B. / Ovaa, H. / Perrakis, A. / Schumacher, T.N.M. | ||||||||||||
![]() | ![]() Title: Class I Major Histocompatibility Complexes Loaded by a Periodate Trigger. Authors: Rodenko, B. / Toebes, M. / Celie, P.H.N. / Perrakis, A. / Schumacher, T.N.M. / Ovaa, H. #1: ![]() Title: Uv-Induced Ligand Exchange in Mhc Class I Protein Crystals. Authors: Celie, P.H.N. / Toebes, M. / Rodenko, B. / Ovaa, H. / Perrakis, A. / Schumacher, T.N.M. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 341.2 KB | Display | ![]() |
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PDB format | ![]() | 279.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 485.7 KB | Display | ![]() |
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Full document | ![]() | 450.6 KB | Display | |
Data in XML | ![]() | 39.3 KB | Display | |
Data in CIF | ![]() | 53.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 2x4qC ![]() 2x4tC ![]() 1eeyS 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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2 | ![]()
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Unit cell |
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Components
-Protein , 2 types, 4 molecules ADBE
#1: Protein | Mass: 31854.203 Da / Num. of mol.: 2 / Fragment: RESIDUES 25-299 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 11879.356 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Protein/peptide , 1 types, 2 molecules CF
#3: Protein/peptide | Mass: 1195.225 Da / Num. of mol.: 2 / Fragment: FRAGMENT RESIDUES 58-66 / Source method: obtained synthetically Details: MODIFIED AT P5 (RESIDUE62) AND P8 (RESIDUE 65).(2-NITRO)PHENYL-PROPIONIC ACID AT P5 AND 3-AMINO-3-(2- NITRO)PHENYL-PROPIONIC ACID AT P8 Source: (synth.) ![]() ![]() |
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-Non-polymers , 3 types, 445 molecules ![](data/chem/img/GOL.gif)
![](data/chem/img/MES.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/MES.gif)
![](data/chem/img/HOH.gif)
#4: Chemical | ChemComp-GOL / #5: Chemical | ChemComp-MES / #6: Water | ChemComp-HOH / | |
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-Details
Sequence details | INITIALIZING METHIONINE (B0 AND D0) ADDED TO SEQUENCE ORIGINAL SEQUENCE IS GILGFVFTL. G AT P1 IS ...INITIALIZI |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2 Å3/Da / Density % sol: 45.3 % / Description: NONE |
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Crystal grow | pH: 6.5 / Details: 0.1 M MES PH 6.5, 20% PEG1500 |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: ADSC QUANTUM 315r / Detector: CCD / Date: Oct 6, 2007 / Details: MIRRORS |
Radiation | Monochromator: NI FILTER / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9786 Å / Relative weight: 1 |
Reflection twin | Operator: -h,-k,l / Fraction: 0.329 |
Reflection | Resolution: 2.3→50 Å / Num. obs: 37987 / % possible obs: 99.6 % / Observed criterion σ(I): -3.7 / Redundancy: 3.8 % / Rmerge(I) obs: 0.11 / Net I/σ(I): 4.7 |
Reflection shell | Resolution: 2.3→2.42 Å / Redundancy: 3.8 % / Rmerge(I) obs: 0.42 / Mean I/σ(I) obs: 1.7 / % possible all: 99.4 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1EEY Resolution: 2.3→19.822 Å / σ(F): 1.45 / Phase error: 38.98 / Stereochemistry target values: TWIN_LSQ_F
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 60.797 Å2 / ksol: 0.343 e/Å3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 44.86 Å2
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Refinement step | Cycle: LAST / Resolution: 2.3→19.822 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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