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CATH Data

This page provides information on the data files that are available to download from the CATH FTP site:

For information on the statistics from specific releases, see this page: release notes.

Data related to the CATH classification

File name	Description
cath-chain-list-<version>.txt	Lists all of the PDB chain IDs in CATH, whether they are chopped into domains or not.
cath-domain-boundaries-*-<version>.txt	Description of domain and segment boundaries for domains classified into CATH.
cath-domain-description-file-<version>.txt	Description of each protein domain in CATH
cath-domain-list-<S35%\|S60\|S95\|S100\|all>-<version>.txt	Lists of domains classified into CATH
cath-domain-pdb-*-<version>.txt	Description of each domain PDB classified into CATH
cath-names-<version>.txt	Name description of each node in the CATH hierarchy, along with an example domain
cath-superfamily-list-<version>.txt	List of all the superfamilies in the CATH hierarchy
cath-unclassified-list-<version>.txt	List of all unclassified protein chains and domains that are still being processed

File name	Description
cath-dataset-nonredundant-S[20\|40]-v4_1_0.atom.fa	The ATOM sequences of the domains in the dataset (which only contain residues that have ATOM records in the PDB file)
cath-dataset-nonredundant-S[20\|40]-v4_1_0.fa	The sequences of the domains in the dataset
cath-dataset-nonredundant-S[20\|40]-v4_1_0.list	A list of the domains in the dataset; one domain ID per line
cath-dataset-nonredundant-S[20\|40]-v4_1_0.pdb.tgz	(A gzipped tar file containing) the PDB files of the domains in the data set

File name	Description
cath-domain-seqs-*-<version>.fa	Sequences for each CATH domain
cath-S35-<version>-hmm3.lib.gz	HMMs for each CATH representative domain from the sequence clusters at 35% sequence identity
funfam-hmm3-<version>.lib.gz	HMMs for each functional family (FunFam)
cath-superfamily-seqs-<superfamily>-<version>.fa	Sequences for each CATH superfamily in FASTA format