- Classes: Small proteins
 - Folds: Ferredoxin thioredoxin reductase (FTR), catalytic beta chain
 - Superfamilies: Ferredoxin thioredoxin reductase (FTR), catalytic beta chain
 - Families: Ferredoxin thioredoxin reductase (FTR), catalytic beta chain
 
Protein Domains:
- Ferredoxin thioredoxin reductase (FTR), catalytic beta chain
- [ABC], [AB], [ABCD]
 - [ABC], [AB]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
