ADDA - A Domain Database

NAR Molecular Biology Database Collection entry number 622
Andreas Heger and Liisa Holm
Institute of Biotechnology, Viikinkaari 9, P.O. Box 56, University of Helsinki, 00014 Helsinki, Finland

Database Description

ADDA is a global clustering of protein sequences into protein domains and protein domain families. The database currently contains domains for 1.5 Mio sequences from UniProt, ENSEMBL, and other sequence databases. The domains are grouped into 123,000 families of which 40,000 have more than five members. The database is built in an entirely automated fashion and is updated regularly. The data is available for download and for querying via the WWW.


Heger A. and Holm L.(2003) Exhaustive enumeration of protein domain families. J Mol Biol. 328: 749-767.

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