8DS7 | pdb_00008ds7

Tumor-activated antibody derivatives targeting CTLA4

• PDB DOI: https://doi.org/10.2210/pdb8DS7/pdb

• Classification: ANTITUMOR PROTEIN
• Organism(s): Mus musculus, Phage 13
• Expression System: Cricetulus griseus
• Mutation(s): No 


• Deposited: 2022-07-21 Released: 2024-02-07 
• Deposition Author(s): Johnson, P., Williams, J.
• Funding Organization(s): Other private

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free: 
  0.191 (Depositor), 0.192 (DCC) 
• R-Value Work: 
  0.156 (Depositor), 0.157 (DCC) 
• R-Value Observed: 
  0.158 (Depositor) 

Starting Model: experimental

Literature

Murine CTLA4 Fab

Park, M., Jenkins, K.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

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

Biological Assembly Evidence: surface plasmon resonance

Macromolecule Content 

• Total Structure Weight: 48.43 kDa 
• Atom Count: 3,992 
• Modeled Residue Count: 443 
• Deposited Residue Count: 445 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
IgG light chain Fab	A [auth L]	219	Mus musculus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
IgG heavy chain Fab	B [auth H]	216	Mus musculus	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
ACNLIVEGHC peptide	C [auth M]	10	Phage 13	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free:  0.191 (Depositor), 0.192 (DCC) 
• R-Value Work:  0.156 (Depositor), 0.157 (DCC) 
• R-Value Observed: 0.158 (Depositor) 

Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.01	α = 90
b = 88.49	β = 90
c = 128.7	γ = 90

Software Package:

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

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2024-02-07 
Deposition Author(s): Johnson, P., Williams, J.

---

Funding Organization	Location	Grant Number
Other private		--

Revision History  

• Version 1.0: 2024-02-07
  Type: Initial release
  
• Version 1.1: 2024-10-30
  Changes: Structure summary
• Version 1.2: 2026-03-04
  Changes: Refinement description