Domain

Structures: Homeodomain, phBC6A51-type (IPR024978)

PDBe

The Protein Data Bank (PDB) is a repository for the 3-D structural data of large biological molecules, such as proteins and nucleic acids.

2ao9 

CATH

CATH is a hierarchical classification of protein model structures.

1.10.10.700 

SCOP

The Structural Classification of Proteins (SCOP) database is a largely manual classification of protein structural domains based on similarities of their amino acid sequences and three-dimensional structures.

a.4.1.17