Macromolecule Content

• Total Structure Weight: 20.63 kDa 
• Atom Count: 1447 
• Residue Count: 186 
• Unique protein chains: 1

1JBJ

CD3 Epsilon and gamma Ectodomain Fragment Complex in Single-Chain Construct

• DOI: 10.2210/pdb1JBJ/pdb
• BMRB: 5072

• Classification: IMMUNE SYSTEM
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-06-05 Released: 2001-12-05 
• Deposition Author(s): Sun, Z.-Y.J., Kim, K.S., Wagner, G., Reinherz, E.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 18 
• Selection Criteria: structures with the least restraint violations 

Literature

Mechanisms contributing to T cell receptor signaling and assembly revealed by the solution structure of an ectodomain fragment of the CD3 epsilon gamma heterodimer.

Sun, Z.J., Kim, K.S., Wagner, G., Reinherz, E.L.

(2001) Cell 105: 913-923

• PubMed: 11439187 
• DOI: 10.1016/s0092-8674(01)00395-6
• Primary Citation of Related Structures:  
  1JBJ


• PubMed Abstract: 
  

The T cell receptor (TCR) consists of genetically diverse disulfide-linked alpha and beta chains in noncovalent association with the invariant CD3 subunits. CD3 epsilon and CD3 gamma are integral components of both the TCR and pre-TCR. Here, we present the solution structure of a heterodimeric CD3 epsilon gamma ectodomain complex. A unique side-to-side hydrophobic interface between the two C2-set immunoglobulin-like domains and parallel pairing of their respective C-terminal beta strands are revealed. Mutational analysis confirms the importance of the distinctive linkage as well as the membrane proximal stalk motif (RxCxxCxE) for domain-domain association. These biochemical and structural analyses offer insights into the modular pairwise association of CD3 invariant chains. More importantly, the findings suggest how the rigidified CD3 elements participate in TCR-based signal transduction.

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Related Citations: 

• Heterodimeric CD3epsilongamma Extracellular Domain Fragments: Production, Purification and Structural Analysis
  Kim, K.S., Sun, Z.Y., Wagner, G., Reinherz, E.L.
  (2000) J Mol Biol 302: 899

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CD3 Epsilon and gamma Ectodomain Fragment Complex	A	186	Mus musculus	Mutation(s): 0  Gene Names: Cd3e FOR EPSILON CHAIN/CD3G FOR GAMMA CHAIN, Cd3g, Cd3e
Find proteins for P22646 (Mus musculus) Explore P22646  Go to UniProtKB:  P22646
Find proteins for P11942 (Mus musculus) Explore P11942  Go to UniProtKB:  P11942

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 18 
• Selection Criteria: structures with the least restraint violations 
• OLDERADO: 1JBJ Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-06-05 
• Released Date: 2001-12-05 
Deposition Author(s): Sun, Z.-Y.J., Kim, K.S., Wagner, G., Reinherz, E.L.

Revision History 

• Version 1.0: 2001-12-05
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance