8X7N

Cell-cell adhesion Nanobody/Antigen Pair

• PDB DOI: https://doi.org/10.2210/pdb8X7N/pdb

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. LT2, synthetic construct
• Expression System: Escherichia coli BL21(DE3), Escherichia coli
• Mutation(s): No 


• Deposited: 2023-11-24 Released: 2024-07-17 
• Deposition Author(s): Chen, P.-P., Hsia, K.-C., Ting, S.-Y., Chen, Y.-C.
• Funding Organization(s): Academia Sinica (Taiwan)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.67 Å
• R-Value Free: 0.285 
• R-Value Work: 0.260 
• R-Value Observed: 0.262 

Starting Model: experimental

Literature

A whole-cell screening platform for discovery cell adhesion molecules enabling programmable bacterial cell-cell adhesion

Chen, P.-P., Hsia, K.-C., Ting, S.-Y., Chen, Y.-C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: isothermal titration calorimetry

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 3 assigned by authors.

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 4 assigned by authors.

Biological Assembly 5  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 5 assigned by authors.

Macromolecule Content

• Total Structure Weight: 139.05 kDa 
• Atom Count: 8,930 
• Modelled Residue Count: 1,190 
• Deposited Residue Count: 1,290 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Conjugative transfer: aggregate stability	A, C, E, G, I	135	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0  Gene Names: traN
UniProt
Find proteins for Q93GM7 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore Q93GM7  Go to UniProtKB:  Q93GM7

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Nb-TraN	B, D, F, H, J	123	synthetic construct	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.67 Å
• R-Value Free: 0.285 
• R-Value Work: 0.260 
• R-Value Observed: 0.262 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 96.864	α = 90
b = 153.263	β = 90
c = 163.03	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-07-17 
Deposition Author(s): Chen, P.-P., Hsia, K.-C., Ting, S.-Y., Chen, Y.-C.

---

Funding Organization	Location	Grant Number
Academia Sinica (Taiwan)	Taiwan	AS-IVA-112-L05

Revision History  

• Version 1.0: 2024-07-17
  Type: Initial release