Domain

Structures: B3 DNA binding domain (IPR003340)

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.

1yel  4i1k  1wid 

CATH

CATH is a hierarchical classification of protein model structures.

2.40.330.10 

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.

b.142.1.2