Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 97822.19 
• Atom Count: 6830 
• Residue Count: 830 
• Unique protein chains: 5

6BJ8

TCR55 in complex with Pep20/HLA-B35

• DOI: 10.2210/pdb6BJ8/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni, Escherichia coli
• Mutation(s): 2 


• Deposited: 2017-11-05 Released: 2018-07-25 
• Deposition Author(s): Jude, K.M., Sibener, L.V., Yang, X., Garcia, K.C.
• Funding Organization(s): NIH 

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 0.183 
• R-Value Work: 0.159 

Literature

Isolation of a Structural Mechanism for Uncoupling T Cell Receptor Signaling from Peptide-MHC Binding.

Sibener, L.V., Fernandes, R.A., Kolawole, E.M., Carbone, C.B., Liu, F., McAffee, D., Birnbaum, M.E., Yang, X., Su, L.F., Yu, W., Dong, S., Gee, M.H., Jude, K.M., Davis, M.M., Groves, J.T., Goddard III, W.A., Heath, J.R., Evavold, B.D., Vale, R.D., Garcia, K.C.

(2018) Cell 174: 672-687.e27

• PubMed: 30053426 
• Primary Citation of Related Structures:  
  6BJ3, 6BJ2

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HLA class I histocompatibility antigen, B-35 alpha chain	A	276	Homo sapiens	Mutation(s): 0  Gene Names: HLA-B (HLAB)
Find proteins for P30685 (Homo sapiens) Go to Gene View: HLA-B Go to UniProtKB:  P30685

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Beta-2-microglobulin	B	99	Homo sapiens	Mutation(s): 0  Gene Names: B2M
Find proteins for P61769 (Homo sapiens) Go to Gene View: B2M Go to UniProtKB:  P61769

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
TCR 55 alpha chain	D	204	N/A	Mutation(s): 1
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details
TCR 55 beta chain	H	242	N/A	Mutation(s): 1
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details
VAL-PRO-LEU-THR-GLU-ASP-ALA-GLU-LEU	C	9	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
PO4	A, D, H	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
GOL	A, B, D, H	GLYCEROL GLYCERIN; PROPANE-1,2,3-TRIOL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 0.183 
• R-Value Work: 0.159 
• Space Group: C 1 2 1
• Diffraction Data DOI: 
  10.15785/SBGRID/517 SBGrid

Unit Cell:

Length (Å)	Angle (°)
a = 194.492	α = 90.00
b = 61.698	β = 104.87
c = 92.145	γ = 90.00

Software Package:

Software Name	Purpose
PHASER	phasing
XDS	data reduction
PHENIX	refinement
XDS	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-11-05 
• Released Date: 2018-07-25 
• Deposition Author(s): Jude, K.M., Sibener, L.V., Yang, X., Garcia, K.C.

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Funding Organization	Location	Grant Number
NIH	United States	--

Revision History 

• Version 1.0: 2018-07-25
  Type: Initial release
• Version 1.1: 2018-08-08
  Type: Data collection, Database references