1BWM

A SINGLE-CHAIN T CELL RECEPTOR

• PDB DOI: https://doi.org/10.2210/pdb1BWM/pdb
• BMRB: 4330

• Classification: IMMUNE SYSTEM
• Organism(s): Mus musculus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 1998-09-23 Released: 1999-07-22 
• Deposition Author(s): Hare, B.J., Wyss, D.F., Reinherz, E.L., Wagner, G.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 80 
• Conformers Submitted: 15 
• Selection Criteria: NO NOE DISTANCE VIOLATION GREATER THAN 0.5 A, NO DIHEDRAL VIOLATION GREATER THAN 5 DEGREES 

Literature

Structure, specificity and CDR mobility of a class II restricted single-chain T-cell receptor.

Hare, B.J., Wyss, D.F., Osburne, M.S., Kern, P.S., Reinherz, E.L., Wagner, G.

(1999) Nat Struct Biol 6: 574-581

• PubMed: 10360364 
• DOI: https://doi.org/10.1038/9359
• Primary Citation of Related Structures:  
  1BWM


• PubMed Abstract: 
  

  Using NMR spectroscopy, we determined the solution structure of a single-chain T-cell receptor (scTCR) derived from the major histocompatibility complex (MHC) class II-restricted D10 TCR. The conformations of complementarity-determining regions (CDRs) 3beta and 1alpha and surface properties of 2alpha are different from those of related class I-restricted TCRs. We infer a conserved orientation for TCR V(alpha) domains in complexes with both class I and II MHC-peptide ligands, which implies that small structural variations in V(alpha) confer MHC class preference. High mobility of CDR3 residues relative to other CDR or framework residues (picosecond time scale) provides insight into immune recognition and selection mechanisms.

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Organizational Affiliation: 

Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 26.97 kDa 
• Atom Count: 1,902 
• Modelled Residue Count: 249 
• Deposited Residue Count: 249 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (ALPHA-BETA T CELL RECEPTOR (TCR) (D10))	A	249	Mus musculus	Mutation(s): 1
UniProt
Find proteins for Q5R1G1 (Mus musculus) Explore Q5R1G1  Go to UniProtKB:  Q5R1G1

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 80 
• Conformers Submitted: 15 
• Selection Criteria: NO NOE DISTANCE VIOLATION GREATER THAN 0.5 A, NO DIHEDRAL VIOLATION GREATER THAN 5 DEGREES 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-07-22 
Deposition Author(s): Hare, B.J., Wyss, D.F., Reinherz, E.L., Wagner, G.

Revision History  

• Version 1.0: 1999-07-22
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations
• Version 1.4: 2023-12-27
  Changes: Data collection
• Version 1.5: 2024-10-30
  Changes: Structure summary