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- PDB-7sif: Crystal Structure of HLA B*3505 in complex with NPDIVIYQY, an 9-m... -

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Basic information

Entry
Database: PDB / ID: 7sif
TitleCrystal Structure of HLA B*3505 in complex with NPDIVIYQY, an 9-mer epitope from HIV-I
Components
  • Beta-2-microglobulin
  • MHC class I antigen
  • Reverse transcriptase peptide NPDIVIYQY
KeywordsIMMUNE SYSTEM / HLA B*3505 / HIV / TCR / T cell / viral peptide
Function / homology
Function and homology information


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 / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / HIV-1 retropepsin / peptide antigen assembly with MHC class II protein complex ...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 / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / HIV-1 retropepsin / peptide antigen assembly with MHC class II protein complex / symbiont-mediated activation of host apoptosis / retroviral ribonuclease H / exoribonuclease H / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / cellular response to iron(III) ion / RNA-directed DNA polymerase activity / MHC class II protein complex / negative regulation of forebrain neuron differentiation / exoribonuclease H activity / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of erythrocyte differentiation / 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 / host multivesicular body / 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 / DNA integration / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / positive regulation of T cell mediated cytotoxicity / cellular response to nicotine / multicellular organismal-level iron ion homeostasis / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / Modulation by Mtb of host immune system / specific granule lumen / viral penetration into host nucleus / RNA stem-loop binding / phagocytic vesicle membrane / recycling endosome membrane / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / Interferon gamma signaling / negative regulation of epithelial cell proliferation / RNA-DNA hybrid ribonuclease activity / MHC class II protein complex binding / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / late endosome membrane / sensory perception of smell / positive regulation of cellular senescence / tertiary granule lumen / DAP12 signaling / T cell differentiation in thymus / ER-Phagosome pathway / host cell / negative regulation of neuron projection development / protein refolding / viral nucleocapsid / early endosome membrane / DNA recombination / protein homotetramerization / amyloid fibril formation / DNA-directed DNA polymerase / aspartic-type endopeptidase activity / Hydrolases; Acting on ester bonds / intracellular iron ion homeostasis / DNA-directed DNA polymerase activity / learning or memory / Amyloid fiber formation / symbiont-mediated suppression of host gene expression / endoplasmic reticulum lumen / viral translational frameshifting / Golgi membrane / lysosomal membrane / external side of plasma membrane / focal adhesion / lipid binding / Neutrophil degranulation / symbiont entry into host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell nucleus / host cell plasma membrane / virion membrane / structural molecule activity / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / proteolysis / extracellular space / DNA binding / extracellular exosome
Similarity search - Function
MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / Reverse transcriptase connection / Reverse transcriptase connection domain / Beta-2-Microglobulin / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal ...MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / Reverse transcriptase connection / Reverse transcriptase connection domain / Beta-2-Microglobulin / 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 / Integrase core domain / Integrase, catalytic core / Integrase catalytic domain profile. / Retropepsin-like catalytic domain / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / RNase H type-1 domain profile. / Ribonuclease H domain / : / Retropepsins / Retroviral aspartyl protease / Aspartyl protease, retroviral-type family profile. / Peptidase A2A, retrovirus, catalytic / Reverse transcriptase domain / Reverse transcriptase (RNA-dependent DNA polymerase) / Reverse transcriptase (RT) catalytic domain profile. / 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 / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Aspartic peptidase domain superfamily / Ribonuclease H superfamily / Ribonuclease H-like superfamily / Reverse transcriptase/Diguanylate cyclase domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold / Immunoglobulins / DNA/RNA polymerase superfamily / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
DI(HYDROXYETHYL)ETHER / Gag-Pol polyprotein / Beta-2-microglobulin
Similarity search - Component
Biological speciesHomo sapiens (human)
Human immunodeficiency virus 1
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 1.73 Å
AuthorsGras, S. / Lobos, C.A. / Chatzileontiadou, D.S.M.
Funding support Australia, 1items
OrganizationGrant numberCountry
National Health and Medical Research Council (NHMRC, Australia)1159272 Australia
CitationJournal: Immunol.Cell.Biol. / Year: 2024
Title: Molecular insights into the HLA-B35 molecules' classification associated with HIV control.
Authors: Lobos, C.A. / Chatzileontiadou, D.S. / Sok, B. / Almedia, C.A. / Halim, H. / D'Orsogna, L. / Gras, S.
History
DepositionOct 14, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 23, 2022Provider: repository / Type: Initial release
Revision 1.1Oct 25, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.2Jun 5, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.3Nov 6, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: MHC class I antigen
B: Beta-2-microglobulin
C: Reverse transcriptase peptide NPDIVIYQY
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,2747
Polymers44,7303
Non-polymers5444
Water4,360242
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5690 Å2
ΔGint-2 kcal/mol
Surface area18800 Å2
MethodPISA
Unit cell
Length a, b, c (Å)50.875, 81.904, 109.320
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein MHC class I antigen


Mass: 31858.078 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HLA-B / Plasmid: pET / Production host: Escherichia coli BL21(DE3) (bacteria)
#2: Protein Beta-2-microglobulin


Mass: 11748.160 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: B2M, CDABP0092, HDCMA22P / Plasmid: pET / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P61769

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Protein/peptide , 1 types, 1 molecules C

#3: Protein/peptide Reverse transcriptase peptide NPDIVIYQY


Mass: 1124.243 Da / Num. of mol.: 1 / Fragment: UNP residues 774-782 / Source method: obtained synthetically / Details: peptide from HIV / Source: (synth.) Human immunodeficiency virus 1 / References: UniProt: P03366

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Non-polymers , 4 types, 246 molecules

#4: Chemical ChemComp-PEG / DI(HYDROXYETHYL)ETHER


Mass: 106.120 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C4H10O3
#5: Chemical ChemComp-TRS / 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL / TRIS BUFFER


Mass: 122.143 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H12NO3 / Comment: pH buffer*YM
#6: Chemical ChemComp-BTB / 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL / BIS-TRIS BUFFER


Mass: 209.240 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H19NO5 / Comment: pH buffer*YM
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 242 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN
Has protein modificationY
Sequence detailsHLA-B*35:05 is a naturally occuring polymorphic allele of HLA-B*35:01 (UNP F4NBT5).

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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: 2.55 Å3/Da / Density % sol: 51.69 % / Mosaicity: 0.06 °
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 6.5 / Details: 0.1M BIS-TRIS, 25% PEG3350

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: Australian Synchrotron / Beamline: MX2 / Wavelength: 0.98 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Nov 30, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.98 Å / Relative weight: 1
ReflectionResolution: 1.73→46.12 Å / Num. obs: 48556 / % possible obs: 100 % / Redundancy: 8.3 % / Biso Wilson estimate: 24.86 Å2 / CC1/2: 0.997 / Rmerge(I) obs: 0.125 / Rpim(I) all: 0.045 / Rrim(I) all: 0.133 / Net I/σ(I): 9.2 / Num. measured all: 402596 / Scaling rejects: 229
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. measured allNum. unique obsCC1/2Rpim(I) allRrim(I) allNet I/σ(I) obs% possible all
1.73-1.768.51.8542229326370.7730.671.9731.6100
8.99-46.127.10.04729614170.990.020.05119.999.3

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Phasing

PhasingMethod: molecular replacement
Phasing MRModel details: Phaser MODE: MR_AUTO
Highest resolutionLowest resolution
Rotation5.98 Å46.12 Å
Translation5.98 Å46.12 Å

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Processing

Software
NameVersionClassificationNB
BUSTER2.10.3 (19-MAR-2020)refinement
XDSdata reduction
Aimless0.7.4data scaling
PHASER2.8.3phasing
PDB_EXTRACT3.27data extraction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4lnr

4lnr


Resolution: 1.73→46.12 Å / Cor.coef. Fo:Fc: 0.94 / Cor.coef. Fo:Fc free: 0.927 / SU R Cruickshank DPI: 0.109 / Cross valid method: THROUGHOUT / σ(F): 0 / SU R Blow DPI: 0.112 / SU Rfree Blow DPI: 0.108 / SU Rfree Cruickshank DPI: 0.107
RfactorNum. reflection% reflectionSelection details
Rfree0.2303 2417 4.99 %RANDOM
Rwork0.1982 ---
obs0.1998 48480 100 %-
Displacement parametersBiso max: 79.53 Å2 / Biso mean: 27.15 Å2 / Biso min: 11.33 Å2
Baniso -1Baniso -2Baniso -3
1-1.4241 Å20 Å20 Å2
2--6.2236 Å20 Å2
3----7.6478 Å2
Refine analyzeLuzzati coordinate error obs: 0.24 Å
Refinement stepCycle: final / Resolution: 1.73→46.12 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3156 0 36 242 3434
Biso mean--47.66 36.29 -
Num. residues----384
Refine LS restraints
Refine-IDTypeNumberRestraint functionWeightDev ideal
X-RAY DIFFRACTIONt_dihedral_angle_d1160SINUSOIDAL2
X-RAY DIFFRACTIONt_trig_c_planes
X-RAY DIFFRACTIONt_gen_planes578HARMONIC5
X-RAY DIFFRACTIONt_it3331HARMONIC10
X-RAY DIFFRACTIONt_nbd
X-RAY DIFFRACTIONt_improper_torsion
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_chiral_improper_torsion412SEMIHARMONIC5
X-RAY DIFFRACTIONt_sum_occupancies
X-RAY DIFFRACTIONt_utility_distance
X-RAY DIFFRACTIONt_utility_angle
X-RAY DIFFRACTIONt_utility_torsion
X-RAY DIFFRACTIONt_ideal_dist_contact2873SEMIHARMONIC4
X-RAY DIFFRACTIONt_bond_d3331HARMONIC20.008
X-RAY DIFFRACTIONt_angle_deg4534HARMONIC20.93
X-RAY DIFFRACTIONt_omega_torsion3.69
X-RAY DIFFRACTIONt_other_torsion15.94
LS refinement shellResolution: 1.73→1.74 Å / Rfactor Rfree error: 0 / Total num. of bins used: 51
RfactorNum. reflection% reflection
Rfree0.2594 30 3.09 %
Rwork0.2229 940 -
all0.224 970 -
obs--99.9 %

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