- Classes: Alpha and beta proteins (a+b)
- Folds: DNA-binding domain of intron-encoded endonucleases
- Superfamilies: DNA-binding domain of intron-encoded endonucleases
- Families: DNA-binding domain of intron-encoded endonucleases
Protein Domains:
- DNA-binding domain of intron endonuclease I-TevI
- [A](AB)
- Intron-encoded homing endonuclease I-HmuI
- [A](ABC)
* [ ] : Polypeptide - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA