- Classes: All alpha proteins
 - Folds: R1 subunit of ribonucleotide reductase, N-terminal domain
 - Superfamilies: R1 subunit of ribonucleotide reductase, N-terminal domain
 - Families: R1 subunit of ribonucleotide reductase, N-terminal domain
 
Protein Domains:
- R1 subunit of ribonucleotide reductase, N-terminal domain
- [A], [A][a2], [A4B4]
 - [A2], [A2B2]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
