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- PDB-2x4u: Crystal structure of MHC CLass I HLA-A2.1 bound to HIV-1 Peptide ... -

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Basic information

Entry
Database: PDB / ID: 2x4u
TitleCrystal structure of MHC CLass I HLA-A2.1 bound to HIV-1 Peptide RT468-476
Components
  • BETA-2-MICROGLOBULINBeta-2 microglobulin
  • HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
  • REVERSE TRANSCRIPTASE/RIBONUCLEASE H
KeywordsIMMUNE SYSTEM / GLYCOPROTEIN / TRANSMEMBRANE / PHOSPHOPROTEIN / IMMUNE RESPONSE / SECRETED / GLYCATION / AMYLOIDOSIS / IMMUNOGLOBULIN DOMAIN / HOST-VIRUS INTERACTION / AMYLOID / MEMBRANE / PHOTOCLEAVABLE PEPTIDE / PYRROLIDONE CARBOXYLIC ACID / ENVELOPE PROTEIN / DISEASE MUTATION
Function / homology
Function and homology information


T cell mediated cytotoxicity directed against tumor cell target / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / positive regulation of memory T cell activation / TAP complex binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / 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 ...T cell mediated cytotoxicity directed against tumor cell target / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / positive regulation of memory T cell activation / TAP complex binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / 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 / endoplasmic reticulum exit site / beta-2-microglobulin binding / TAP binding / 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 / positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / early endosome lumen / positive regulation of receptor binding / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / negative regulation of receptor binding / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / HIV-1 retropepsin / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / cellular response to iron(III) ion / : / negative regulation of forebrain neuron differentiation / ER to Golgi transport vesicle membrane / retroviral ribonuclease H / exoribonuclease H / peptide antigen assembly with MHC class I protein complex / response to molecule of bacterial origin / regulation of erythrocyte differentiation / regulation of iron ion transport / MHC class I peptide loading complex / : / exoribonuclease H activity / HFE-transferrin receptor complex / T cell mediated cytotoxicity / cellular response to iron ion / antigen processing and presentation of endogenous peptide antigen via MHC class I / positive regulation of T cell cytokine production / MHC class I protein complex / host multivesicular body / multicellular organismal-level iron ion homeostasis / positive regulation of T cell mediated cytotoxicity / peptide antigen assembly with MHC class II protein complex / negative regulation of neurogenesis / DNA integration / MHC class II protein complex / positive regulation of receptor-mediated endocytosis / cellular response to nicotine / RNA-directed DNA polymerase / recycling endosome membrane / phagocytic vesicle membrane / specific granule lumen / peptide antigen binding / viral genome integration into host DNA / viral penetration into host nucleus / establishment of integrated proviral latency / positive regulation of cellular senescence / antigen processing and presentation of exogenous peptide antigen via MHC class II / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / RNA-directed DNA polymerase activity / Interferon gamma signaling / positive regulation of immune response / negative regulation of epithelial cell proliferation / Modulation by Mtb of host immune system / positive regulation of T cell activation / Interferon alpha/beta signaling / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / positive regulation of type II interferon production / sensory perception of smell / RNA-DNA hybrid ribonuclease activity / negative regulation of neuron projection development / E3 ubiquitin ligases ubiquitinate target proteins / tertiary granule lumen / DAP12 signaling / MHC class II protein complex binding / late endosome membrane / T cell differentiation in thymus / positive regulation of protein binding / ER-Phagosome pathway / antibacterial humoral response / iron ion transport / T cell receptor signaling pathway / protein refolding / early endosome membrane / protein homotetramerization / viral nucleocapsid / DNA recombination / intracellular iron ion homeostasis / amyloid fibril formation / Hydrolases; Acting on ester bonds
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 / Reverse transcriptase connection / Reverse transcriptase connection domain / MHC class I-like antigen recognition-like ...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 / Reverse transcriptase connection / Reverse transcriptase connection domain / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain / Integrase, C-terminal domain superfamily, retroviral / Integrase, N-terminal zinc-binding domain / Integrase, C-terminal, retroviral / Integrase DNA binding domain profile. / Immunodeficiency lentiviral matrix, N-terminal / gag gene protein p17 (matrix protein) / RNase H / MHC classes I/II-like antigen recognition protein / Integrase core domain / Integrase, catalytic core / Integrase catalytic domain profile. / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / Retropepsin-like catalytic domain / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Ribonuclease H domain / RNase H type-1 domain profile. / Reverse transcriptase (RNA-dependent DNA polymerase) / Reverse transcriptase domain / Reverse transcriptase (RT) catalytic domain profile. / Retropepsins / Retroviral aspartyl protease / Aspartyl protease, retroviral-type family profile. / Peptidase A2A, retrovirus, catalytic / Retrovirus capsid, C-terminal / Retroviral matrix protein / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Zinc finger, CCHC-type superfamily / Zinc finger, CCHC-type / Zinc finger CCHC-type profile. / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ribonuclease H superfamily / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Aspartic peptidase domain superfamily / Ribonuclease H-like superfamily / Reverse transcriptase/Diguanylate cyclase domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulins / DNA/RNA polymerase superfamily / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
HLA class I histocompatibility antigen, A alpha chain / Gag-Pol polyprotein / HLA class I histocompatibility antigen, A alpha chain / Beta-2-microglobulin
Similarity search - Component
Biological speciesHOMO SAPIENS (human)
HUMAN IMMUNODEFICIENCY VIRUS 1
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsCelie, P.H.N. / Toebes, M. / Rodenko, B. / Ovaa, H. / Perrakis, A. / Schumacher, T.N.M.
CitationJournal: J.Am.Chem.Soc. / Year: 2009
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
DepositionFeb 2, 2010Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 2, 2010Provider: repository / Type: Initial release
Revision 1.1May 7, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 16, 2019Group: Data collection / Other / Category: pdbx_database_status / reflns_shell
Item: _pdbx_database_status.status_code_sf / _reflns_shell.Rmerge_I_obs
Revision 1.4Dec 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
B: BETA-2-MICROGLOBULIN
C: REVERSE TRANSCRIPTASE/RIBONUCLEASE H
D: HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
E: BETA-2-MICROGLOBULIN
F: REVERSE TRANSCRIPTASE/RIBONUCLEASE H
hetero molecules


Theoretical massNumber of molelcules
Total (without water)91,25920
Polymers89,4546
Non-polymers1,80514
Water7,656425
1
D: HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
E: BETA-2-MICROGLOBULIN
F: REVERSE TRANSCRIPTASE/RIBONUCLEASE H
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,77311
Polymers44,7273
Non-polymers1,0468
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6600 Å2
ΔGint-12.6 kcal/mol
Surface area18450 Å2
MethodPISA
2
A: HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
B: BETA-2-MICROGLOBULIN
C: REVERSE TRANSCRIPTASE/RIBONUCLEASE H
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,4869
Polymers44,7273
Non-polymers7596
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6560 Å2
ΔGint-13.6 kcal/mol
Surface area18750 Å2
MethodPISA
Unit cell
Length a, b, c (Å)62.215, 82.774, 79.655
Angle α, β, γ (deg.)90.00, 90.76, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Protein , 2 types, 4 molecules ADBE

#1: Protein HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN / MHC CLASS I ANTIGEN A*2


Mass: 31854.203 Da / Num. of mol.: 2 / Fragment: RESIDUES 25-299
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HOMO SAPIENS (human) / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: P01892, UniProt: P04439*PLUS
#2: Protein BETA-2-MICROGLOBULIN / 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) / Strain (production host): XLI BLUE / References: UniProt: P61769

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Protein/peptide , 1 types, 2 molecules CF

#3: Protein/peptide REVERSE TRANSCRIPTASE/RIBONUCLEASE H / P66 RT


Mass: 993.199 Da / Num. of mol.: 2 / Fragment: REVERSE TRANSCRIPTASE, RESIDUES 908-916 / Source method: obtained synthetically / Source: (synth.) HUMAN IMMUNODEFICIENCY VIRUS 1
References: UniProt: P03366, RNA-directed DNA polymerase, DNA-directed DNA polymerase, ribonuclease H

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Non-polymers , 3 types, 439 molecules

#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical
ChemComp-MES / 2-(N-MORPHOLINO)-ETHANESULFONIC ACID / MES (buffer)


Mass: 195.237 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C6H13NO4S / Comment: pH buffer*YM
#6: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 425 / Source method: isolated from a natural source / Formula: H2O

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Details

Sequence detailsINITIALIZING METHIONINE (B0 AND E0) ADDED TO SEQUENCE

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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: 2.29 Å3/Da / Density % sol: 42 % / Description: NONE
Crystal growpH: 6.5
Details: 100 MM MES PH 5.5, 20% PEG 1500. CRYSTALS WERE FROZEN IN 100 MM MES, 30% PEG 1500, 10% GLYCEROL

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID23-1 / Wavelength: 0.97932
DetectorType: ADSC CCD / Detector: CCD / Date: Oct 6, 2007 / Details: MIRRORS
RadiationMonochromator: NI FILTER / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97932 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. obs: 46009 / % possible obs: 97.6 % / Observed criterion σ(I): -3.7 / Redundancy: 3.8 % / Biso Wilson estimate: 33.03 Å2 / Rmerge(I) obs: 0.05 / Net I/σ(I): 8.4
Reflection shellResolution: 2.1→2.21 Å / Redundancy: 3.7 % / Rmerge(I) obs: 0.2 / Mean I/σ(I) obs: 3.9 / % possible all: 97.6

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Processing

Software
NameVersionClassification
PHENIX(PHENIX.REFINE)refinement
MOSFLMdata reduction
TRUNCATEdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1EEY

1eey


Resolution: 2.1→19.95 Å / SU ML: 0.28 / σ(F): 1.41 / Phase error: 21.8 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.234 1985 4.3 %
Rwork0.1762 --
obs0.1787 45960 97.31 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 51.778 Å2 / ksol: 0.4 e/Å3
Displacement parametersBiso mean: 39.94 Å2
Baniso -1Baniso -2Baniso -3
1--0.6252 Å20 Å20.6627 Å2
2--4.3599 Å20 Å2
3----3.7346 Å2
Refinement stepCycle: LAST / Resolution: 2.1→19.95 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6308 0 114 425 6847
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0076862
X-RAY DIFFRACTIONf_angle_d1.4749310
X-RAY DIFFRACTIONf_dihedral_angle_d18.7852537
X-RAY DIFFRACTIONf_chiral_restr0.165929
X-RAY DIFFRACTIONf_plane_restr0.0041224
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.1001-2.15250.2371400.17653122X-RAY DIFFRACTION96
2.1525-2.21060.23231360.17033094X-RAY DIFFRACTION97
2.2106-2.27560.26281480.17613076X-RAY DIFFRACTION97
2.2756-2.34890.24491390.18343130X-RAY DIFFRACTION97
2.3489-2.43280.2381440.17723125X-RAY DIFFRACTION97
2.4328-2.530.26251510.18213120X-RAY DIFFRACTION97
2.53-2.64490.24781320.1943138X-RAY DIFFRACTION97
2.6449-2.7840.24811530.18613137X-RAY DIFFRACTION98
2.784-2.95790.2761310.19913163X-RAY DIFFRACTION97
2.9579-3.18540.27231490.19783152X-RAY DIFFRACTION98
3.1854-3.50440.2711450.19023134X-RAY DIFFRACTION98
3.5044-4.00790.17751390.15913187X-RAY DIFFRACTION98
4.0079-5.03610.1851360.13453207X-RAY DIFFRACTION98
5.0361-19.95050.21511420.17513190X-RAY DIFFRACTION96
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
11.3782-0.13610.58270.97350.30172.47660.0719-0.07810.04130.04630.10220.2803-0.1562-0.180900.14260.01370.04130.13760.04260.243.84013.261918.7763
20.6890.2314-0.31491.0173-0.82391.38050.13-0.01620.0687-0.0569-0.0879-0.0459-0.06840.41530.00010.14520.01760.01580.2299-0.00180.132535.42476.86172.6975
31.2907-0.11250.08691.7468-0.06050.36260.13080.1766-0.1522-0.0979-0.01560.00140.07610.0557-00.15870.0206-0.05660.1309-0.02350.147125.0143-11.635310.841
41.5311-0.69650.10081.348-0.19622.36960.01640.0633-0.03930.0316-0.0457-0.46370.01810.039500.1966-0.0342-0.00480.1488-0.01820.257626.596537.29736.1033
51.20180.10190.02860.6545-0.03961.11910.2939-0.0087-0.1051-0.1995-0.00910.30260.3395-0.487-0.00010.2384-0.0021-0.10630.30420.02510.2428-4.822632.645819.9512
60.94590.19060.3490.6393-0.33341.48610.0790.07440.08170.0699-0.01090.0489-0.3777-0.15700.27760.04670.10850.15960.02620.14885.762651.152627.0863
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1(CHAIN A AND RESID 1:180)
2X-RAY DIFFRACTION2(CHAIN A AND RESID 181:275)
3X-RAY DIFFRACTION3(CHAIN B AND RESID 0:99)
4X-RAY DIFFRACTION4(CHAIN D AND RESID 1:180)
5X-RAY DIFFRACTION5(CHAIN D AND RESID 181:275)
6X-RAY DIFFRACTION6(CHAIN E AND RESID 0:99)

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