- Classes: All alpha proteins
- Folds: SAM domain-like
- Superfamilies: PsbU/PolX domain-like
- Families: PsbU-like
Protein Domains:
- Photosystem II 12 kDa extrinsic protein PsbU
- [A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2]
- [A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2S2T], [A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2S2], [ABCDEFGHIJKLMNOPQRST], [A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2][a2]
* [ ] : Polypeptide - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA