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Open data
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Basic information
Entry | Database: PDB / ID: 1iak | ||||||
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Title | HISTOCOMPATIBILITY ANTIGEN I-AK | ||||||
![]() | (MHC CLASS II I-AK) x 3 | ||||||
![]() | HISTOCOMPATIBILITY ANTIGEN I-AK / HISTOCOMPATIBILITY ANTIGEN / MHC / PEPTIDE COMPLEX | ||||||
Function / homology | ![]() Phosphorylation of CD3 and TCR zeta chains / Translocation of ZAP-70 to Immunological synapse / PD-1 signaling / Generation of second messenger molecules / Downstream TCR signaling / cytolysis / antigen processing and presentation of peptide antigen / MHC class II antigen presentation / positive regulation of T cell differentiation / antigen processing and presentation ...Phosphorylation of CD3 and TCR zeta chains / Translocation of ZAP-70 to Immunological synapse / PD-1 signaling / Generation of second messenger molecules / Downstream TCR signaling / cytolysis / antigen processing and presentation of peptide antigen / MHC class II antigen presentation / positive regulation of T cell differentiation / antigen processing and presentation / metabolic process / negative regulation of T cell proliferation / multivesicular body / peptide antigen assembly with MHC class II protein complex / MHC class II protein complex / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / positive regulation of T cell activation / lysozyme / MHC class II protein complex binding / late endosome membrane / lysozyme activity / adaptive immune response / lysosome / early endosome / defense response to bacterium / immune response / lysosomal membrane / external side of plasma membrane / protein-containing complex binding / Golgi apparatus / cell surface / extracellular region / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Fremont, D.H. / Unanue, E.R. / Hendrickson, W.A. | ||||||
![]() | ![]() Title: Crystal structure of I-Ak in complex with a dominant epitope of lysozyme. Authors: Fremont, D.H. / Monnaie, D. / Nelson, C.A. / Hendrickson, W.A. / Unanue, E.R. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 97.2 KB | Display | ![]() |
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PDB format | ![]() | 76.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 402.5 KB | Display | ![]() |
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Full document | ![]() | 407.4 KB | Display | |
Data in XML | ![]() | 9.5 KB | Display | |
Data in CIF | ![]() | 16 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1ieaS 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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Unit cell |
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Components on special symmetry positions |
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Components
#1: Protein | Mass: 22689.281 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: WITH COVALENTLY BOUND HEL PEPTIDE / Source: (gene. exp.) ![]() ![]() | ||||
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#2: Protein | Mass: 21887.592 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: WITH COVALENTLY BOUND HEL PEPTIDE / Source: (gene. exp.) ![]() ![]() | ||||
#3: Protein/peptide | Mass: 1553.697 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: WITH COVALENTLY BOUND HEL PEPTIDE / Source: (gene. exp.) ![]() ![]() | ||||
#4: Sugar | #5: Water | ChemComp-HOH / | Compound details | THIS ENTRY CONTAINS COORDINATES FOR THE EXTRACELLULAR DOMAINS OF THE MURINE MHC CLASS II MOLECULE I- ...THIS ENTRY CONTAINS COORDINATE | |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.4 Å3/Da / Density % sol: 63.85 % | |||||||||||||||||||||||||||||||||||
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Crystal grow | pH: 4.75 Details: 20% PEG 4000, 7% EG, 80MM A.S, 200MM AMM.ACETATE, 50MM NA.ACETATE PH 4.75 | |||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS Temperature: 20 ℃ / Method: vapor diffusion, hanging drop | |||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 110 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: FUJI / Detector: IMAGE PLATE |
Radiation | Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9763 Å / Relative weight: 1 |
Reflection | Highest resolution: 1.9 Å / Num. obs: 48139 / % possible obs: 95.7 % / Observed criterion σ(I): 0 / Redundancy: 4.12 % / Biso Wilson estimate: 25.1 Å2 / Rsym value: 0.05 / Net I/σ(I): 11.7 |
Reflection shell | Resolution: 1.9→1.99 Å / Mean I/σ(I) obs: 2.5 / Rsym value: 0.27 / % possible all: 96.6 |
Reflection | *PLUS Num. measured all: 198306 / Rmerge(I) obs: 0.05 |
Reflection shell | *PLUS % possible obs: 96.6 % / Rmerge(I) obs: 0.27 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1IEA Resolution: 1.9→10 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 100000 / Data cutoff low absF: 0.01 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
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Displacement parameters | Biso mean: 30.9 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 1.9→10 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 1.9→1.99 Å / Rfactor Rfree error: 0.023 / Total num. of bins used: 8
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Xplor file |
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Software | *PLUS Name: ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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LS refinement shell | *PLUS Rfactor obs: 0.357 |