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- PDB-1duy: CRYSTAL STRUCTURE OF HLA-A*0201/OCTAMERIC TAX PEPTIDE COMPLEX -

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Basic information

Entry
Database: PDB / ID: 1duy
TitleCRYSTAL STRUCTURE OF HLA-A*0201/OCTAMERIC TAX PEPTIDE COMPLEX
Components
  • BETA-2 MICROGLOBULIN
  • HLA-A2*0201
  • HTLV-1 OCTAMERIC TAX PEPTIDE
KeywordsIMMUNE SYSTEM / Immunoglobulin fold
Function / homology
Function and homology information


positive regulation of memory T cell activation / T cell mediated cytotoxicity directed against tumor cell target / TAP complex binding / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / 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 / beta-2-microglobulin binding ...positive regulation of memory T cell activation / T cell mediated cytotoxicity directed against tumor cell target / TAP complex binding / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / 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 / beta-2-microglobulin binding / endoplasmic reticulum exit site / TAP binding / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / protection from natural killer cell mediated cytotoxicity / 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 / detection of bacterium / T cell receptor binding / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / peptide antigen assembly with MHC class II protein complex / cellular response to iron(III) ion / MHC class II protein complex / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / MHC class I protein complex / positive regulation of T cell activation / peptide antigen binding / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / specific granule lumen / positive regulation of type II interferon production / phagocytic vesicle membrane / recycling endosome membrane / Interferon gamma signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / Interferon alpha/beta signaling / Modulation by Mtb of host immune system / late endosome membrane / sensory perception of smell / positive regulation of cellular senescence / antibacterial humoral response / tertiary granule lumen / DAP12 signaling / T cell differentiation in thymus / T cell receptor signaling pathway / E3 ubiquitin ligases ubiquitinate target proteins / negative regulation of neuron projection development / ER-Phagosome pathway / protein refolding / early endosome membrane / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / defense response to Gram-positive bacterium / immune response / endoplasmic reticulum lumen / Amyloid fiber formation / signaling receptor binding / Golgi membrane / lysosomal membrane / innate immune response / external side of plasma membrane / focal adhesion / Neutrophil degranulation / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / cell surface / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / extracellular space / RNA binding / extracellular exosome
Similarity search - Function
MHC class I, alpha chain, C-terminal / MHC_I C-terminus / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily ...MHC class I, alpha chain, C-terminal / MHC_I C-terminus / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold / Immunoglobulins / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
HLA class I histocompatibility antigen, A alpha chain / HLA class I histocompatibility antigen, A alpha chain / Beta-2-microglobulin
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / Resolution: 2.15 Å
AuthorsKhan, A.R. / Baker, B.M. / Ghosh, P. / Biddison, W.E. / Wiley, D.C.
CitationJournal: J.Immunol. / Year: 2000
Title: The structure and stability of an HLA-A*0201/octameric tax peptide complex with an empty conserved peptide-N-terminal binding site.
Authors: Khan, A.R. / Baker, B.M. / Ghosh, P. / Biddison, W.E. / Wiley, D.C.
History
DepositionJan 19, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 4, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 6, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: HLA-A2*0201
B: BETA-2 MICROGLOBULIN
C: HTLV-1 OCTAMERIC TAX PEPTIDE
D: HLA-A2*0201
E: BETA-2 MICROGLOBULIN
F: HTLV-1 OCTAMERIC TAX PEPTIDE


Theoretical massNumber of molelcules
Total (without water)89,3816
Polymers89,3816
Non-polymers00
Water8,917495
1
A: HLA-A2*0201
B: BETA-2 MICROGLOBULIN
C: HTLV-1 OCTAMERIC TAX PEPTIDE


Theoretical massNumber of molelcules
Total (without water)44,6913
Polymers44,6913
Non-polymers00
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4190 Å2
ΔGint-22 kcal/mol
Surface area19050 Å2
MethodPISA
2
D: HLA-A2*0201
E: BETA-2 MICROGLOBULIN
F: HTLV-1 OCTAMERIC TAX PEPTIDE


Theoretical massNumber of molelcules
Total (without water)44,6913
Polymers44,6913
Non-polymers00
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4250 Å2
ΔGint-19 kcal/mol
Surface area19060 Å2
MethodPISA
Unit cell
Length a, b, c (Å)50.340, 62.860, 74.840
Angle α, β, γ (deg.)82.01, 76.10, 77.96
Int Tables number1
Space group name H-MP1

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Components

#1: Protein HLA-A2*0201


Mass: 31854.203 Da / Num. of mol.: 2 / Fragment: HEAVY CHAIN
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: UniProt: P01892, UniProt: P04439*PLUS
#2: Protein BETA-2 MICROGLOBULIN


Mass: 11879.356 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: UniProt: P61769
#3: Protein/peptide HTLV-1 OCTAMERIC TAX PEPTIDE


Mass: 957.123 Da / Num. of mol.: 2 / Source method: obtained synthetically
Details: Peptide was obtained through standard solid-phase peptide synthesis
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 495 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.5 Å3/Da / Density % sol: 50.87 %
Crystal growTemperature: 298 K / Method: vapor diffusion / pH: 6.5
Details: 13-20% polyethylene glycol 6000, 25 mM MES buffer, pH 6.5, VAPOR DIFFUSION, temperature 298K
Crystal grow
*PLUS
Temperature: 18 ℃ / pH: 6.4 / Details: used seeding
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
13 mg/mlTax8-A21drop
20.400 mMTax8 peptide1drop
325 mMMES1drop
40.1 %1dropNaN3
513 %PEG60001reservoir
625 mMMES1reservoir
70.1 %1reservoirNaN3

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: ELLIOTT GX-13 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Nov 27, 1997
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.15→50 Å / Num. all: 60478 / Num. obs: 38048 / % possible obs: 78 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.2 % / Biso Wilson estimate: 30.7 Å2 / Rmerge(I) obs: 0.047 / Net I/σ(I): 11.1
Reflection shellResolution: 2.15→2.26 Å / Redundancy: 1.5 % / Rmerge(I) obs: 0.3 / % possible all: 38.3
Reflection
*PLUS
Num. measured all: 60478

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS0.9refinement
RefinementResolution: 2.15→50 Å / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh and Huber
Details: crystallographically restrained least-squares refinement using CNS
RfactorNum. reflection% reflectionSelection details
Rfree0.254 3655 -RANDOM
Rwork0.192 ---
all0.198 48780 --
obs0.198 38048 78 %-
Refinement stepCycle: LAST / Resolution: 2.15→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6306 0 0 495 6801
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_angle_deg1.6
Software
*PLUS
Name: CNS / Version: 0.9 / Classification: refinement
Refinement
*PLUS
Lowest resolution: 50 Å / σ(F): 0 / Rfactor obs: 0.1918 / % reflection Rfree: 10 %
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_angle_deg1.6
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg25.3
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.9
LS refinement shell
*PLUS
Highest resolution: 2.2 Å / Lowest resolution: 2.26 Å / Rfactor Rfree: 0.287 / Rfactor obs: 0.216

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