- Classes: All beta proteins
 - Folds: ISP domain
 - Superfamilies: ISP domain
 - Families: Rieske iron-sulfur protein (ISP)
 
Protein Domains:
- ISP subunit from the cytochrome b6f complex, soluble domain
- [A2B2C2D2E2F2G2H2I2]
 - [A2B2C2D2E2F2G2][a2]
 
 - ISP subunit of the mitochondrial cytochrome bc1-complex, water-soluble domain
- [ABCDEFGHIJK], [A2B2C2D2E2F2G2H2I2J2K2L], [A3B3C3D3E3F3G3H3I3JK], [A2B2C2D2E2F2G2H2I2]
 - [A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2S2T2U2V2W2]
 - [A2B2C2D2E2F2G2H2I2], [ABCDEFGHI]
 - [A2B2C2D2E2F2G2H2I2J2], [A2B2C2D2E2F2G2H2I2J2K2], [ABCDEFGHIJK], [ABCDEFGHIJ][a]
 
 - automated matches
- [A2B2C2D2E2F2G2H2I2J2K2], [A2B2C2D2E2F2G2HIJKLMNOPQRSTUVWXY]
 - [A2B2C2D2E2F2G2H2I2J2]
 - [A2B2C2D2E2F2G2H2I2J2K2]
 - [A2B2C2D2E2F2G2][a2]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
