Domain

Structures: Peptide chain release factor class I/class II (IPR000352)

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.

2ihr  1gqe  1zbt  1rq0  1j26  2jy9  2jva  2b3t 

CATH

CATH is a hierarchical classification of protein model structures.

3.30.160.20 

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.

d.50.4.1  e.38.1.1