CATH Search: "World Is Open"

You can start browsing through the CATH tree by starting at the least discriminatory classification level (Class) then working your way through to more discriminatory collections of domains ( Architecture, Topology, then Homologous Superfamily).

You can search CATH with identifiers such as:

• PDB codes (e.g. 1cuk)
• PDB chains (e.g. 1cukA)
• CATH domain codes (e.g. 1cukA01)
• CATH classification codes (e.g. 1.10.10)

You can perform a quick BLAST search of the sequences in CATH by submitting a FASTA sequence.