5E56 | pdb_00005e56

Crystal structure of mouse CTLA-4

• PDB DOI: https://doi.org/10.2210/pdb5E56/pdb

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


• Deposited: 2015-10-07 Released: 2015-10-28 
• Deposition Author(s): Fedorov, A.A., Fedorov, E.V., SAMANTA, D., Bonanno, J.B., Almo, S.C.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.203 (Depositor), 0.200 (DCC) 
• R-Value Work: 
  0.180 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.181 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of mouse CTLA-4

Fedorov, A.A., Fedorov, E.V., SAMANTA, D., Bonanno, J.B., Almo, S.C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 12.95 kDa 
• Atom Count: 1,020 
• Modeled Residue Count: 116 
• Deposited Residue Count: 117 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytotoxic T-lymphocyte protein 4	A	117	Mus musculus	Mutation(s): 0  Gene Names: Ctla4, Cd152
UniProt
Find proteins for P09793 (Mus musculus) Explore P09793  Go to UniProtKB:  P09793

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.203 (Depositor), 0.200 (DCC) 
• R-Value Work:  0.180 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.181 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 47.538	α = 90
b = 36.598	β = 105.13
c = 65.149	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-10-28 
Deposition Author(s): Fedorov, A.A., Fedorov, E.V., SAMANTA, D., Bonanno, J.B., Almo, S.C.

Revision History  

• Version 1.0: 2015-10-28
  Type: Initial release
  
• Version 1.1: 2016-03-02
  Changes: Database references, Structure summary
• Version 1.2: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2024-11-20
  Changes: Structure summary