Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - ABCD Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer -A2BC 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 73500.84 
• Atom Count: 5172 
• Residue Count: 665 
• Unique protein chains: 4

1KB5

MURINE T-CELL RECEPTOR VARIABLE DOMAIN/FAB COMPLEX

• DOI: 10.2210/pdb1KB5/pdb

• Classification: COMPLEX (IMMUNOGLOBULIN/RECEPTOR)
• Organism(s): Mus musculus
• Expression System: Mus musculus


• Deposited: 1997-04-06 Released: 1998-04-08 
• Deposition Author(s): Housset, D., Mazza, G., Gregoire, C., Piras, C., Malissen, B., Fontecilla-Camps, J.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Work: 0.219 

Literature

The three-dimensional structure of a T-cell antigen receptor V alpha V beta heterodimer reveals a novel arrangement of the V beta domain.

Housset, D., Mazza, G., Gregoire, C., Piras, C., Malissen, B., Fontecilla-Camps, J.C.

(1997) EMBO J. 16: 4205-4216

• PubMed: 9250664 


• PubMed Abstract: 
  

The crystal structure of a mouse T-cell antigen receptor (TCR) Fv fragment complexed to the Fab fragment of a specific anti-clonotypic antibody has been determined to 2.6 A resolution. The polypeptide backbone of the TCR V alpha domain is very similar to those of other crystallographically determined V alphas, whereas the V beta structure is so far unique among TCR V beta domains in that it displays a switch of the c" strand from the inner to the outer beta-sheet. The beta chain variable region of this TCR antigen-binding site is characterized by a rather elongated third complementarity-determining region (CDR3beta) that packs tightly against the CDR3 loop of the alpha chain, without leaving any intervening hydrophobic pocket. Thus, the conformation of the CDR loops with the highest potential diversity distinguishes the structure of this TCR antigen-binding site from those for which crystallographic data are available. On the basis of all these results, we infer that a significant conformational change of the CDR3beta loop found in our TCR is required for binding to its cognate peptide-MHC ligand.

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Related Citations: 

• Engineered Secreted T-Cell Receptor Alpha Beta Heterodimers
  Gregoire, C.,Rebai, N.,Schweisguth, F.,Necker, A.,Mazza, G.,Auphan, N.,Millward, A.,Schmitt-Verhulst, A.M.,Malissen, B.
  (1991) Proc.Natl.Acad.Sci.USA 88: 8077
• An Alphabeta T Cell Receptor Structure at 2.5 A and its Orientation in the Tcr-Mhc Complex
  Garcia, K.C.,Degano, M.,Stanfield, R.L.,Brunmark, A.,Jackson, M.R.,Peterson, P.A.,Teyton, L.,Wilson, I.A.
  (1996) Science 274: 209
• Crystal Structure of the V Alpha Domain of a T Cell Antigen Receptor
  Fields, B.A.,Ober, B.,Malchiodi, E.L.,Lebedeva, M.I.,Braden, B.C.,Ysern, X.,Kim, J.K.,Shao, X.,Ward, E.S.,Mariuzza, R.A.
  (1995) Science 270: 1821
• Structure of the Complex between Human T-Cell Receptor, Viral Peptide and Hla-A2
  Garboczi, D.N.,Ghosh, P.,Utz, U.,Fan, Q.R.,Biddison, W.E.,Wiley, D.C.
  (1996) Nature 384: 134
• Crystal Structure of the Beta Chain of a T Cell Antigen Receptor
  Bentley, G.A.,Boulot, G.,Karjalainen, K.,Mariuzza, R.A.
  (1995) Science 267: 1984




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Organizational Affiliation: 

Laboratoire de Cristallographie et Cristallogénèse des Protéines, Institut de Biologie Structurale Jean-Pierre Ebel CEA-CNRS, Grenoble, France.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
KB5-C20 T-CELL ANTIGEN RECEPTOR	A	115	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
KB5-C20 T-CELL ANTIGEN RECEPTOR	B	117	Mus musculus	Mutation(s): 0
Find proteins for P04214 (Mus musculus) Go to UniProtKB:  P04214

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
ANTIBODY DESIRE-1	L	214	Mus musculus	Mutation(s): 0  Gene Names: Igkc
Find proteins for P01837 (Mus musculus) Go to UniProtKB:  P01837

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details
ANTIBODY DESIRE-1	H	219	Mus musculus	Mutation(s): 0  Gene Names: Igh-1a
Find proteins for P01865 (Mus musculus) Go to UniProtKB:  P01865

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Work: 0.219 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 187.310	α = 90.00
b = 80.950	β = 90.00
c = 52.080	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
AMoRE	phasing
XSCALE	data scaling
XDS	data scaling
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-04-06 
• Released Date: 1998-04-08 
• Deposition Author(s): Housset, D., Mazza, G., Gregoire, C., Piras, C., Malissen, B., Fontecilla-Camps, J.C.

Revision History 

• Version 1.0: 1998-04-08
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2018-04-04
  Type: Data collection
• Version 1.4: 2018-04-11
  Type: Data collection