4OZI

S2 protein complex

• PDB DOI: https://doi.org/10.2210/pdb4OZI/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens, Triticum aestivum
• Expression System: Trichoplusia ni, Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2014-02-16 Released: 2014-04-16 
• Deposition Author(s): Petersen, J., Reid, H.H., Rossjohn, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free: 0.243 
• R-Value Work: 0.212 
• R-Value Observed: 0.214 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 195.92 kDa 
• Atom Count: 12,849 
• Modelled Residue Count: 1,629 
• Deposited Residue Count: 1,736 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HLA class II histocompatibility antigen, DQ alpha 1 chain	A, C	191	Homo sapiens	Mutation(s): 0  Gene Names: HLA-DQA1
UniProt & NIH Common Fund Data Resources
Find proteins for P01909 (Homo sapiens) Explore P01909  Go to UniProtKB:  P01909
PHAROS:  P01909 GTEx:  ENSG00000196735

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
HLA class II histocompatibility antigen, DQ beta 1 chain	B, D	213	Homo sapiens	Mutation(s): 0  Gene Names: HLA-DQB1
UniProt
Find proteins for Q5Y7D3 (Homo sapiens) Explore Q5Y7D3  Go to UniProtKB:  Q5Y7D3

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
T-cell receptor, s2, alpha chain	E, G	207	Homo sapiens	Mutation(s): 0
UniProt
Find proteins for Q2YD82 (Homo sapiens) Explore Q2YD82  Go to UniProtKB:  Q2YD82

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
T-cell receptor, s2, beta chain	F, H	244	Homo sapiens	Mutation(s): 0
UniProt
Find proteins for P01850 (Homo sapiens) Explore P01850  Go to UniProtKB:  P01850

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
deamidated Gliadin-alpha1 peptide	I, J	13	Triticum aestivum	Mutation(s): 0
UniProt
Find proteins for P04722 (Triticum aestivum) Explore P04722  Go to UniProtKB:  P04722

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	K [auth A], M [auth C]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
CA	L [auth B], N [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free: 0.243 
• R-Value Work: 0.212 
• R-Value Observed: 0.214 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 233.027	α = 90
b = 142.239	β = 109.79
c = 101.09	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-04-16 
Deposition Author(s): Petersen, J., Reid, H.H., Rossjohn, J.

Revision History  

• Version 1.0: 2014-04-16
  Type: Initial release
  
• Version 1.1: 2014-05-28
  Changes: Data collection
• Version 1.2: 2014-12-24
  Changes: Database references
• Version 1.3: 2015-02-04
  Changes: Derived calculations
• Version 1.4: 2015-04-22
  Changes: Database references
• Version 1.5: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Data collection, Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary
• Version 1.6: 2023-12-27
  Changes: Data collection, Database references, Structure summary