Domain

Structures: Beta-galactosidase, domain 2 (IPR018954)

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.

3ogr  3ogv  1xc6  3ogs  1tg7  3og2  4iug 

CATH

CATH is a hierarchical classification of protein model structures.

2.102.20.10 

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.71.1.5  b.149.1.1