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Open data
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Basic information
Entry | Database: PDB / ID: 1onq | |||||||||
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Title | Crystal Structure of CD1a in Complex with a Sulfatide | |||||||||
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![]() | IMMUNE SYSTEM / Protein-Glycolipid complex / beta sheet platform | |||||||||
Function / homology | ![]() : / : / regulation of membrane depolarization / endogenous lipid antigen binding / exogenous lipid antigen binding / antigen processing and presentation, endogenous lipid antigen via MHC class Ib / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / lipopeptide binding / retina homeostasis / positive regulation of ferrous iron binding ...: / : / regulation of membrane depolarization / endogenous lipid antigen binding / exogenous lipid antigen binding / antigen processing and presentation, endogenous lipid antigen via MHC class Ib / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / lipopeptide binding / retina homeostasis / 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 / negative regulation of receptor binding / DAP12 interactions / 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 / peptide antigen assembly with MHC class I protein complex / ER to Golgi transport vesicle membrane / 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 / positive regulation of receptor-mediated endocytosis / peptide antigen assembly with MHC class II protein complex / 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 / peptide antigen binding / positive regulation of cellular senescence / 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 / antimicrobial humoral immune response mediated by antimicrobial peptide / positive regulation of T cell activation / sensory perception of smell / negative regulation of neuron projection development / positive regulation of protein binding / tertiary granule lumen / DAP12 signaling / MHC class II protein complex binding / late endosome membrane / iron ion transport / antibacterial humoral response / ER-Phagosome pathway / early endosome membrane / T cell differentiation in thymus / protein refolding / cellular response to lipopolysaccharide / protein homotetramerization / defense response to Gram-negative bacterium / intracellular iron ion homeostasis / adaptive immune response / amyloid fibril formation / learning or memory / endosome membrane / defense response to Gram-positive bacterium / immune response / membrane raft / Amyloid fiber formation / endoplasmic reticulum lumen / external side of plasma membrane / Golgi membrane / lysosomal membrane / innate immune response / focal adhesion / Neutrophil degranulation / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / Golgi apparatus / endoplasmic reticulum / protein homodimerization activity / extracellular space / extracellular exosome / extracellular region / identical protein binding / membrane / plasma membrane / cytosol Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Zajonc, D.M. / Elsliger, M.A. / Teyton, L. / Wilson, I.A. | |||||||||
![]() | ![]() Title: Crystal structure of CD1a in complex with a sulfatide self antigen at a resolution of 2.15 A. Authors: Zajonc, D.M. / Elsliger, M.A. / Teyton, L. / Wilson, I.A. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 180.9 KB | Display | ![]() |
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PDB format | ![]() | 142.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1gzqS S: Starting model for refinement |
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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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Details | biologically active subunit is a heterodimer of CD1a and beta-2-microglobulin |
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Components
-Protein , 2 types, 4 molecules ACBD
#1: Protein | Mass: 32510.408 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 11748.160 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Sugars , 4 types, 7 molecules ![](data/chem/img/FUC.gif)
![](data/chem/img/NAG.gif)
![](data/chem/img/NAG.gif)
#3: Polysaccharide | Source method: isolated from a genetically manipulated source #4: Polysaccharide | alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #5: Sugar | #7: Sugar | ChemComp-NAG / | |
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-Non-polymers , 2 types, 452 molecules ![](data/chem/img/SLF.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/HOH.gif)
#6: Chemical | #8: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.54 Å3/Da / Density % sol: 51.22 % | ||||||||||||||||||||||||
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Crystal grow | Temperature: 277 K / pH: 8.5 Details: MPEG 2000, Tris, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 277.0K, pH 8.50 | ||||||||||||||||||||||||
Crystal grow | *PLUS Temperature: 4 ℃ / Method: vapor diffusion / PH range low: 8.5 / PH range high: 8 | ||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 120 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: ADSC QUANTUM 4 / Detector: CCD / Date: Oct 11, 2002 |
Radiation | Monochromator: SI 220 SINGLE CRYSTAL, CYLINDRICALLY BENT / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 2.15→50 Å / Num. obs: 48912 / % possible obs: 91.6 % / Observed criterion σ(I): 0 / Redundancy: 3.8 % / Rsym value: 0.067 / Net I/σ(I): 22.5 |
Reflection shell | Resolution: 2.15→2.19 Å / Mean I/σ(I) obs: 2.2 / Rsym value: 0.44 / % possible all: 76.6 |
Reflection | *PLUS Highest resolution: 2.15 Å / Lowest resolution: 40 Å / Redundancy: 3.8 % / Rmerge(I) obs: 0.067 |
Reflection shell | *PLUS % possible obs: 76.6 % / Rmerge(I) obs: 0.44 / Mean I/σ(I) obs: 2.2 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1GZQ Resolution: 2.15→40 Å / Cor.coef. Fo:Fc: 0.938 / Cor.coef. Fo:Fc free: 0.901 / SU B: 7.285 / SU ML: 0.185 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.303 / ESU R Free: 0.237 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 13.91 Å2
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Refinement step | Cycle: LAST / Resolution: 2.15→40 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.15→2.21 Å / Total num. of bins used: 20 /
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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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Refinement | *PLUS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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