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- PDB-2z31: Crystal structure of immune receptor complex -

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Basic information

Entry
Database: PDB / ID: 2z31
TitleCrystal structure of immune receptor complex
Components
  • H-2 class II histocompatibility antigen, A-U alpha chain
  • H-2 class II histocompatibility antigen, A-U beta chain precursor
  • Myelin basic protein (MBP)-peptide
  • T-cell receptor alpha-chain
  • T-cell receptor beta-chain
KeywordsIMMUNE SYSTEM / complex
Function / homology
Function and homology information


antigen processing and presentation of peptide antigen / positive regulation of T cell differentiation / antigen processing and presentation / negative regulation of T cell proliferation / peptide antigen assembly with MHC class II protein complex / MHC class II protein complex / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / positive regulation of T cell activation ...antigen processing and presentation of peptide antigen / positive regulation of T cell differentiation / antigen processing and presentation / negative regulation of T cell proliferation / peptide antigen assembly with MHC class II protein complex / MHC class II protein complex / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / positive regulation of T cell activation / MHC class II protein complex binding / late endosome membrane / adaptive immune response / lysosome / lysosomal membrane / external side of plasma membrane / protein-containing complex binding / plasma membrane
Similarity search - Function
Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1 / Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1 / MHC class II, beta chain, N-terminal / Class II histocompatibility antigen, beta domain / Class II histocompatibility antigen, beta domain / MHC class II, alpha chain, N-terminal / Class II histocompatibility antigen, alpha domain / Class II histocompatibility antigen, alpha domain / MHC class II, alpha/beta chain, N-terminal / Immunoglobulin V-Type ...Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1 / Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1 / MHC class II, beta chain, N-terminal / Class II histocompatibility antigen, beta domain / Class II histocompatibility antigen, beta domain / MHC class II, alpha chain, N-terminal / Class II histocompatibility antigen, alpha domain / Class II histocompatibility antigen, alpha domain / MHC class II, alpha/beta chain, N-terminal / Immunoglobulin V-Type / Immunoglobulin V-set domain / MHC classes I/II-like antigen recognition protein / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / 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 / Immunoglobulins / Roll / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Beta-chain / H-2 class II histocompatibility antigen, A-U beta chain / H-2 class II histocompatibility antigen, A-U alpha chain / TRAV6D-7
Similarity search - Component
Biological speciesMus musculus (house mouse)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.7 Å
AuthorsFeng, D. / Bond, C.J. / Ely, L.K. / Garcia, K.C.
CitationJournal: Nat.Immunol. / Year: 2007
Title: Structural evidence for a germline-encoded T cell receptor-major histocompatibility complex interaction 'codon'
Authors: Feng, D. / Bond, C.J. / Ely, L.K. / Maynard, J. / Garcia, K.C.
History
DepositionMay 30, 2007Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Oct 9, 2007Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Remark 999SEQUENCE The sequnce database for chain A and B does not currently exist in UNP.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: T-cell receptor alpha-chain
B: T-cell receptor beta-chain
C: H-2 class II histocompatibility antigen, A-U alpha chain
D: H-2 class II histocompatibility antigen, A-U beta chain precursor
P: Myelin basic protein (MBP)-peptide


Theoretical massNumber of molelcules
Total (without water)68,6345
Polymers68,6345
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)97.332, 97.332, 174.369
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number91
Space group name H-MP4122

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Components

#1: Protein T-cell receptor alpha-chain


Mass: 12379.511 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Escherichia coli (E. coli) / References: UniProt: Q5R1F5
#2: Protein T-cell receptor beta-chain


Mass: 12010.091 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Escherichia coli (E. coli) / References: UniProt: A2NTY6
#3: Protein H-2 class II histocompatibility antigen, A-U alpha chain


Mass: 20540.934 Da / Num. of mol.: 1 / Fragment: extracellular alpha-1 and extracellular alpha-2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Drosophila melanogaster (fruit fly) / References: UniProt: P14438
#4: Protein H-2 class II histocompatibility antigen, A-U beta chain precursor


Mass: 22495.164 Da / Num. of mol.: 1 / Fragment: extracellular beta-1 and extracellular beta-2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Drosophila melanogaster (fruit fly) / References: UniProt: P06344
#5: Protein/peptide Myelin basic protein (MBP)-peptide


Mass: 1208.286 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: The peptide was chemically synthesized.

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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: 3.01 Å3/Da / Density % sol: 59.1 %
Crystal growTemperature: 295 K / Method: vapor diffusion, sitting drop / pH: 7
Details: 0.2M patassium sodium tartrate tetrahydrate, 0.1M succinic acid, 16% polyethylene glycol 3350, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 295K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL11-1
DetectorType: ADSC QUANTUM 4 / Detector: CCD
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthRelative weight: 1
ReflectionResolution: 2.7→97 Å / Num. all: 23722 / Num. obs: 23722 / % possible obs: 99.8 % / Redundancy: 10.5 % / Rmerge(I) obs: 0.092 / Rsym value: 0.092 / Net I/σ(I): 20.5
Reflection shellResolution: 2.7→2.78 Å / Redundancy: 10.3 % / Rmerge(I) obs: 0.549 / Mean I/σ(I) obs: 2.7 / Num. unique all: 23722 / Rsym value: 0.549 / % possible all: 100

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Processing

Software
NameVersionClassification
HKL-2000data collection
AMoREphasing
CNS1.1refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.7→50 Å
RfactorNum. reflection% reflection
Rfree0.287 --
Rwork0.235 --
all0.235 23722 -
obs-23722 99.8 %
Refinement stepCycle: LAST / Resolution: 2.7→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4841 0 0 0 4841

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