2AQ3

Crystal structure of T-cell receptor V beta domain variant complexed with superantigen SEC3

• PDB DOI: https://doi.org/10.2210/pdb2AQ3/pdb

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


• Deposited: 2005-08-17 Released: 2006-03-21 
• Deposition Author(s): Cho, S., Swaminathan, C.P., Yang, J., Kerzic, M.C., Guan, R., Kieke, M.C., Kranz, D.M., Mariuzza, R.A., Sundberg, E.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.271 
• R-Value Work: 0.206 
• R-Value Observed: 0.209 

Literature

Structural basis of affinity maturation and intramolecular cooperativity in a protein-protein interaction.

Cho, S., Swaminathan, C.P., Yang, J., Kerzic, M.C., Guan, R., Kieke, M.C., Kranz, D.M., Mariuzza, R.A., Sundberg, E.J.

(2005) Structure 13: 1775-1787

• PubMed: 16338399 
• DOI: https://doi.org/10.1016/j.str.2005.11.001
• Primary Citation of Related Structures:  
  2APB, 2APF, 2APT, 2APV, 2APW, 2APX, 2AQ1, 2AQ2, 2AQ3

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 8-mer - A4B4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 158.12 kDa 
• Atom Count: 11,155 
• Modelled Residue Count: 1,376 
• Deposited Residue Count: 1,396 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
T-cell receptor beta chain V	A, C, E, G	112	Mus musculus	Mutation(s): 0
UniProt
Find proteins for P04213 (Mus musculus) Explore P04213  Go to UniProtKB:  P04213

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Enterotoxin type C-3	B, D, F, H	237	Staphylococcus aureus	Mutation(s): 0  Gene Names: entC3
UniProt
Find proteins for P0A0L5 (Staphylococcus aureus) Explore P0A0L5  Go to UniProtKB:  P0A0L5

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.271 
• R-Value Work: 0.206 
• R-Value Observed: 0.209 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.16	α = 74.18
b = 70.46	β = 75.76
c = 98.37	γ = 88.4

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-03-21 
Deposition Author(s): Cho, S., Swaminathan, C.P., Yang, J., Kerzic, M.C., Guan, R., Kieke, M.C., Kranz, D.M., Mariuzza, R.A., Sundberg, E.J.

Revision History  

• Version 1.0: 2006-03-21
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-11-20
  Changes: Data collection, Database references, Structure summary