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- PDB-6lhh: Crystal structure of chicken 8mer-BF2*1501 -

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Basic information

Entry
Database: PDB / ID: 6lhh
TitleCrystal structure of chicken 8mer-BF2*1501
Components
  • ARG-ARG-ARG-GLU-GLN-THR-ASP-TYR
  • Beta-2-microglobulin
  • MHC class I
KeywordsIMMUNE SYSTEM / chicken / BF2*15:01 / MDV
Function / homology
Function and homology information


ER-Phagosome pathway / Endosomal/Vacuolar pathway / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / DAP12 signaling / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / antigen processing and presentation of peptide antigen via MHC class I / Neutrophil degranulation / cellular response to iron ion / peptide antigen assembly with MHC class II protein complex / MHC class II protein complex ...ER-Phagosome pathway / Endosomal/Vacuolar pathway / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / DAP12 signaling / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / antigen processing and presentation of peptide antigen via MHC class I / Neutrophil degranulation / cellular response to iron ion / peptide antigen assembly with MHC class II protein complex / MHC class II protein complex / negative regulation of forebrain neuron differentiation / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / HFE-transferrin receptor complex / MHC class I peptide loading complex / 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 / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / late endosome membrane / positive regulation of cellular senescence / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / immune response / lysosomal membrane / structural molecule activity / Golgi apparatus / protein homodimerization activity / extracellular region / cytosol
Similarity search - Function
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. ...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
Similarity search - Domain/homology
Beta-2-microglobulin / MHC class I
Similarity search - Component
Biological speciesGallus gallus (chicken)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.71 Å
AuthorsLiu, Y.J. / Xia, C.
Funding support China, 2items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31572493 China
National Natural Science Foundation of China (NSFC)31972683 China
CitationJournal: Front Immunol / Year: 2020
Title: The Combination of CD8 alpha alpha and Peptide-MHC-I in a Face-to-Face Mode Promotes Chicken gamma delta T Cells Response.
Authors: Liu, Y. / Chen, R. / Liang, R. / Sun, B. / Wu, Y. / Zhang, L. / Kaufman, J. / Xia, C.
History
DepositionDec 8, 2019Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Dec 9, 2020Provider: repository / Type: Initial release
Revision 1.1Jun 23, 2021Group: 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
Revision 1.2Nov 22, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.3Nov 13, 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

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Assembly

Deposited unit
A: MHC class I
B: Beta-2-microglobulin
C: ARG-ARG-ARG-GLU-GLN-THR-ASP-TYR


Theoretical massNumber of molelcules
Total (without water)42,8463
Polymers42,8463
Non-polymers00
Water55831
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5090 Å2
ΔGint-12 kcal/mol
Surface area18410 Å2
MethodPISA
Unit cell
Length a, b, c (Å)123.452, 123.452, 81.220
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein MHC class I / MHC class I alpha chain 2 / MHC class I molecule / BF2*15:01


Mass: 30657.658 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Gallus gallus (chicken) / Gene: BF2 / Production host: Escherichia coli (E. coli) / References: UniProt: Q9GIP6
#2: Protein Beta-2-microglobulin


Mass: 11062.404 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Gallus gallus (chicken) / Gene: B2M / Production host: Escherichia coli (E. coli) / References: UniProt: P21611
#3: Protein/peptide ARG-ARG-ARG-GLU-GLN-THR-ASP-TYR


Mass: 1126.205 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Gallus gallus (chicken) / Production host: Escherichia coli (E. coli)
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 31 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN
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: 4.13 Å3/Da / Density % sol: 70.22 %
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / pH: 5.8
Details: 0.2M Magnesium nitrate hexahydrate, 20% (w/v) polyethylene glycol 3350, PH 5.8

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL17U1 / Wavelength: 0.97 Å
DetectorType: ADSC QUANTUM 315 / Detector: CCD / Date: Aug 12, 2014
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97 Å / Relative weight: 1
ReflectionResolution: 2.71→50 Å / Num. obs: 18044 / % possible obs: 96.2 % / Redundancy: 3.4 % / Rmerge(I) obs: 0.08 / Net I/σ(I): 11.09
Reflection shellResolution: 2.71→2.77 Å / Rmerge(I) obs: 0.24 / Mean I/σ(I) obs: 2.659 / Num. unique obs: 111237

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Processing

Software
NameVersionClassification
REFMAC5refinement
SCALEPACKdata scaling
PDB_EXTRACT3.25data extraction
HKL-2000data reduction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4E0R

4e0r


Resolution: 2.71→50 Å / Cor.coef. Fo:Fc: 0.923 / Cor.coef. Fo:Fc free: 0.892 / SU B: 26.98 / SU ML: 0.259 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.473 / ESU R Free: 0.306 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: U VALUES : WITH TLS ADDED
RfactorNum. reflection% reflectionSelection details
Rfree0.2647 998 5.2 %RANDOM
Rwork0.2304 ---
obs0.2321 18044 96.18 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 122.1 Å2 / Biso mean: 59.58 Å2 / Biso min: 26.87 Å2
Baniso -1Baniso -2Baniso -3
1-2.08 Å21.04 Å2-0 Å2
2--2.08 Å20 Å2
3----6.75 Å2
Refinement stepCycle: final / Resolution: 2.71→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3020 0 5 31 3056
Biso mean--88.44 40.53 -
Num. residues----379
LS refinement shellResolution: 2.71→2.777 Å / Rfactor Rfree error: 0
RfactorNum. reflection% reflection
Rfree0.363 74 -
Rwork0.36 1327 -
obs--97.7 %
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)
10.1437-0.24480.07660.62630.45361.8892-0.073-0.0483-0.06320.05760.10760.1144-0.1002-0.013-0.03460.1071-0.01830.02030.04040.02730.029351.4903-21.9282-5.6467
21.0782-0.37171.16786.16582.29985.97840.01510.1483-0.033-0.031-0.11530.1287-0.0833-0.18920.10010.12440.05440.08180.06650.01750.064245.1155-5.89020.3024
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A4 - 273
2X-RAY DIFFRACTION2B2 - 99

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