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- PDB-1ffo: CRYSTAL STRUCTURE OF MURINE CLASS I H-2DB COMPLEXED WITH SYNTHETI... -
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Basic information
Entry | Database: PDB / ID: 1ffo | ||||||
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Title | CRYSTAL STRUCTURE OF MURINE CLASS I H-2DB COMPLEXED WITH SYNTHETIC PEPTIDE GP33 (C9M/K1A) | ||||||
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![]() | IMMUNE SYSTEM/SIGNALING PROTEIN / major histocompatibility complex / peptide binding / T cell receptor / IMMUNE SYSTEM-SIGNALING PROTEIN COMPLEX | ||||||
Function / homology | ![]() Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / ER-Phagosome pathway / DAP12 signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / beta-2-microglobulin binding / cellular defense response / Neutrophil degranulation ...Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / ER-Phagosome pathway / DAP12 signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / beta-2-microglobulin binding / cellular defense response / Neutrophil degranulation / 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 / peptide binding / 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 / 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 / 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 / positive regulation of immune response / sensory perception of smell / positive regulation of T cell activation / negative regulation of neuron projection development / MHC class II protein complex binding / late endosome membrane / iron ion transport / T cell differentiation in thymus / protein refolding / protein homotetramerization / intracellular iron ion homeostasis / amyloid fibril formation / learning or memory / immune response / lysosomal membrane / external side of plasma membrane / signaling receptor binding / protein-containing complex binding / structural molecule activity / Golgi apparatus / protein homodimerization activity / extracellular space / plasma membrane / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() | ||||||
![]() | Wang, B. / Sharma, A. / Maile, R. / Saad, M. / Collins, E.J. / Frelinger, J.A. | ||||||
![]() | ![]() Title: Peptidic termini play a significant role in TCR recognition. Authors: Wang, B. / Sharma, A. / Maile, R. / Saad, M. / Collins, E.J. / Frelinger, J.A. #1: ![]() Title: Structural evidence of T cell xeno reactivity in the absence of molecular mimicry Authors: Zhao, R. / Loftus, D.J. / Apella, E. / Collins, E.J. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 159 KB | Display | ![]() |
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PDB format | ![]() | 132 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 462.6 KB | Display | ![]() |
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Full document | ![]() | 489.8 KB | Display | |
Data in XML | ![]() | 30.6 KB | Display | |
Data in CIF | ![]() | 41.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related 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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Details | H-2Db heavy chain is noncovalently associated to beta-2 microglobulin light chain. Heavy chain comprises of three subunits alpha1, alpha2 and alpha3. peptide binds in the groove formed by the alpha1 and alpha2 domains of heavy chain |
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Components
#1: Protein | Mass: 31804.420 Da / Num. of mol.: 2 / Fragment: EXTRACELLULAR PORTION Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Protein | Mass: 11835.555 Da / Num. of mol.: 2 / Fragment: BETA-2 MICROGLOBULIN Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #3: Protein/peptide | Mass: 987.130 Da / Num. of mol.: 2 / Fragment: GP33 PEPTIDE WITH SUBSTITUTION / Mutation: C9M/K1A / Source method: obtained synthetically Details: The peptide was synthesized at the peptide synthesi facility of University of North Carolina at Chapel Hill #4: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.61 Å3/Da / Density % sol: 52.91 % | ||||||||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6.5 Details: 23% PEG8000, 6% DMSO, 0.8 M Glycine. 150 mM NaCl, 25mM MES buffer, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K | ||||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS | ||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() |
Detector | Type: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Sep 27, 1999 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 2.65→50 Å / Num. all: 24299 / Num. obs: 24299 / % possible obs: 93.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 2 % / Biso Wilson estimate: 42.9 Å2 / Rmerge(I) obs: 0.125 / Net I/σ(I): 6.51 |
Reflection shell | Resolution: 2.65→2.82 Å / Redundancy: 2 % / Rmerge(I) obs: 0.039 / Num. unique all: 3574 / % possible all: 85.4 |
Reflection | *PLUS Num. measured all: 104494 |
Reflection shell | *PLUS % possible obs: 85.4 % / Rmerge(I) obs: 0.206 / Mean I/σ(I) obs: 3.93 |
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Processing
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Refinement | Resolution: 2.65→50 Å / Rfactor Rfree error: 0.008 / Data cutoff high absF: 713735.66 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber / Details: Used Maximum Likelihood Function
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 28.33 Å2 / ksol: 0.362 e/Å3 | |||||||||||||||||||||||||
Displacement parameters | Biso mean: 31.6 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.65→50 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.65→2.82 Å / Rfactor Rfree error: 0.027 / Total num. of bins used: 6
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Xplor file | Serial no: 1 / Param file: PROTEIN_REP.PA / Topol file: PROTEIN.TOP | |||||||||||||||||||||||||
Refinement | *PLUS Lowest resolution: 50 Å / % reflection Rfree: 5 % | |||||||||||||||||||||||||
Solvent computation | *PLUS | |||||||||||||||||||||||||
Displacement parameters | *PLUS | |||||||||||||||||||||||||
Refine LS restraints | *PLUS
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