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- PDB-8dv3: Crystal structure of human CD1b presenting Phosphatidylinositol C34:1 -

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Basic information

Entry
Database: PDB / ID: 8dv3
TitleCrystal structure of human CD1b presenting Phosphatidylinositol C34:1
Components
  • Beta-2-microglobulin
  • T-cell surface glycoprotein CD1b
KeywordsIMMUNE SYSTEM / Antigen presentation / lipid
Function / homology
Function and homology information


exogenous lipid antigen binding / antigen processing and presentation, endogenous lipid antigen via MHC class Ib / lipopeptide binding / endogenous lipid antigen binding / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport ...exogenous lipid antigen binding / antigen processing and presentation, endogenous lipid antigen via MHC class Ib / lipopeptide binding / endogenous lipid antigen binding / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / 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 / 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 / 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 / Modulation by Mtb of host immune system / late endosome membrane / sensory perception of smell / positive regulation of cellular senescence / tertiary granule lumen / DAP12 signaling / T cell differentiation in thymus / negative regulation of neuron projection development / ER-Phagosome pathway / protein refolding / early endosome membrane / protein homotetramerization / amyloid fibril formation / adaptive immune response / intracellular iron ion homeostasis / learning or memory / endosome membrane / immune response / endoplasmic reticulum lumen / Amyloid fiber formation / Golgi membrane / lysosomal membrane / external side of plasma membrane / focal adhesion / intracellular membrane-bounded organelle / Neutrophil degranulation / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / cell surface / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / extracellular space / extracellular exosome / extracellular region / identical protein binding / membrane / plasma membrane / cytosol
Similarity search - Function
MHC-I family domain / 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 ...MHC-I family domain / 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 / Mainly Beta
Similarity search - Domain/homology
TETRACOSYL PALMITATE / IODIDE ION / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOINOSITOL / T-cell surface glycoprotein CD1b / Beta-2-microglobulin
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsFarquhar, R. / Rossjohn, J. / Shahine, A.
Funding support Australia, 1items
OrganizationGrant numberCountry
Australian Research Council (ARC)DE210101031 Australia
CitationJournal: J.Biol.Chem. / Year: 2023
Title: alpha beta T-cell receptor recognition of self-phosphatidylinositol presented by CD1b.
Authors: Farquhar, R. / Van Rhijn, I. / Moody, D.B. / Rossjohn, J. / Shahine, A.
History
DepositionJul 28, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 12, 2023Provider: 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 1.2Oct 30, 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: T-cell surface glycoprotein CD1b
B: Beta-2-microglobulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)49,59322
Polymers45,5052
Non-polymers4,08820
Water5,405300
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area10470 Å2
ΔGint-79 kcal/mol
Surface area19560 Å2
MethodPISA
Unit cell
Length a, b, c (Å)57.816, 78.628, 92.725
Angle α, β, γ (deg.)90.00, 90.00, 90.00
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 T-cell surface glycoprotein CD1b


Mass: 33530.691 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD1B / Plasmid: pHLSEC / Cell line (production host): HEK293S / Production host: Homo sapiens (human) / References: UniProt: P29016
#2: Protein Beta-2-microglobulin


Mass: 11974.456 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: B2M, CDABP0092, HDCMA22P / Plasmid: pHLSEC / Cell line (production host): HEK293S / Production host: Homo sapiens (human) / References: UniProt: P61769

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Sugars , 2 types, 2 molecules

#3: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-3)][alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1203.105 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4[LFucpa1-3][LFucpa1-6]DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/4,7,6/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5][a1122h-1b_1-5][a1122h-1a_1-5]/1-2-1-3-4-4-2/a3-b1_a4-c1_a6-g1_c4-d1_d3-e1_d6-f1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(3+1)][a-L-Fucp]{}[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}[(6+1)][a-L-Fucp]{}}LINUCSPDB-CARE
#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}LINUCSPDB-CARE

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Non-polymers , 7 types, 318 molecules

#5: Chemical
ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C2H6O2
#6: Chemical
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Cl
#7: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#8: Chemical ChemComp-6UL / TETRACOSYL PALMITATE


Mass: 593.062 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C40H80O2 / Feature type: SUBJECT OF INVESTIGATION
#9: Chemical ChemComp-IOD / IODIDE ION


Mass: 126.904 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: I
#10: Chemical ChemComp-PIE / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOINOSITOL


Mass: 836.061 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C43H80O13P / Feature type: SUBJECT OF INVESTIGATION
#11: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 300 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
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: 2.32 Å3/Da / Density % sol: 46.89 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop
Details: 24% PEG 3350, 0.2M Sodium Iodide, 2% ethylene glycol

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: Australian Synchrotron / Beamline: MX1 / Wavelength: 0.9753 Å
DetectorType: DECTRIS EIGER X 9M / Detector: PIXEL / Date: Oct 13, 2018
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9753 Å / Relative weight: 1
ReflectionResolution: 1.9→46.58 Å / Num. obs: 33822 / % possible obs: 99.32 % / Redundancy: 14.7 % / CC1/2: 0.99 / Rpim(I) all: 0.062 / Net I/σ(I): 13.5
Reflection shellResolution: 1.9→1.97 Å / Redundancy: 14.7 % / Mean I/σ(I) obs: 2.1 / Num. unique obs: 3316 / CC1/2: 0.73 / Rpim(I) all: 0.635 / % possible all: 98.66

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Processing

Software
NameVersionClassification
PHENIX(1.20.1_4487: ???)refinement
PDB_EXTRACT3.27data extraction
XDSdata reduction
Aimlessdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 5WL1

5wl1


Resolution: 1.9→46.58 Å / SU ML: 0.27 / Cross valid method: THROUGHOUT / σ(F): 1.34 / Phase error: 27.98 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2534 996 2.95 %
Rwork0.1917 --
obs0.1935 33805 99.33 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 1.9→46.58 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2996 0 242 300 3538
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.008
X-RAY DIFFRACTIONf_angle_d0.899
X-RAY DIFFRACTIONf_dihedral_angle_d15.5211285
X-RAY DIFFRACTIONf_chiral_restr0.051506
X-RAY DIFFRACTIONf_plane_restr0.006566
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.9-20.37391320.32424597X-RAY DIFFRACTION98
2-2.130.32121580.25644577X-RAY DIFFRACTION99
2.13-2.290.26741280.22114623X-RAY DIFFRACTION99
2.29-2.520.24291450.20384643X-RAY DIFFRACTION99
2.52-2.880.26561190.20284718X-RAY DIFFRACTION100
2.88-3.630.26231580.17244719X-RAY DIFFRACTION100
3.63-46.580.2061560.15294932X-RAY DIFFRACTION100
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)
11.36640.1029-0.04061.3858-0.13582.93740.0180.1119-0.2044-0.0915-0.0305-0.12670.09290.07660.01140.106-0.00030.0020.1269-0.01520.1758-2.6535-15.86316.5156
23.7219-2.29520.34452.2098-0.3560.18030.0849-0.0402-0.0185-0.1-0.08160.106-0.0257-0.05560.00630.1766-0.0148-0.00210.1872-0.05380.1272-26.7908-2.363916.5257
32.13370.2026-0.182.5151-0.21331.84470.16320.25830.3017-0.1707-0.34470.153-0.4956-0.18330.13830.27530.081-0.04670.2383-0.00620.1901-14.19847.58724.8446
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'A' and (resid 4 through 150 )
2X-RAY DIFFRACTION2chain 'A' and (resid 151 through 283 )
3X-RAY DIFFRACTION3chain 'B' and (resid 1 through 100 )

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