Domain

Structures: CID domain (IPR006569)

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.

1sz9  1sza  2bf0 

CATH

CATH is a hierarchical classification of protein model structures.

1.25.40.90 

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.118.9.4