3RQ3 | pdb_00003rq3

Structure of T-cell immunoreceptor with immunoglobulin and ITIM domains (TIGIT) in hexagonal crystal form

• PDB DOI: https://doi.org/10.2210/pdb3RQ3/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-04-27 Released: 2011-06-01 
• Deposition Author(s): Ramagopal, U.A., Rubinstein, R., Guo, H., Samanta, D., Nathenson, S.G., Almo, S.C., New York Structural Genomics Research Consortium (NYSGRC), Atoms-to-Animals: The Immune Function Network (IFN)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 
  0.253 (Depositor), 0.246 (DCC) 
• R-Value Work: 
  0.206 (Depositor), 0.202 (DCC) 
• R-Value Observed: 
  0.208 (Depositor) 

Starting Model: experimental

Literature

Structure of T-cell immunoreceptor with immunoglobulin and ITIM domains (TIGIT) in hexagonal crystal form

Ramagopal, U.A., Rubinstein, R., Guo, H., Samanta, D., Nathenson, S.G., Almo, S.C., New York Structural Genomics Research Consortium (NYSGRC), Atoms-to-Animals: The Immune Function Network (IFN)

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 25.21 kDa 
• Atom Count: 1,688 
• Modeled Residue Count: 214 
• Deposited Residue Count: 232 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
T cell immunoreceptor with Ig and ITIM domains	A, B	116	Homo sapiens	Mutation(s): 0  Gene Names: TIGIT, VSIG9, VSTM3
UniProt & NIH Common Fund Data Resources
Find proteins for Q495A1 (Homo sapiens) Explore Q495A1  Go to UniProtKB:  Q495A1
PHAROS:  Q495A1 GTEx:  ENSG00000181847

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	C [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free:  0.253 (Depositor), 0.246 (DCC) 
• R-Value Work:  0.206 (Depositor), 0.202 (DCC) 
• R-Value Observed: 0.208 (Depositor) 

Space Group: P 6₄ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 118.614	α = 90
b = 118.614	β = 90
c = 98.197	γ = 120

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-06-01 
Deposition Author(s): Ramagopal, U.A., Rubinstein, R., Guo, H., Samanta, D., Nathenson, S.G., Almo, S.C., New York Structural Genomics Research Consortium (NYSGRC), Atoms-to-Animals: The Immune Function Network (IFN)

Revision History  

• Version 1.0: 2011-06-01
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2024-11-20
  Changes: Structure summary