Bairoch, A. 1991 PROSITE: a dictionary of sites and patterns in proteins. Nucleic Acids Res. 19, 2241–2245.

Eddy, S.R.1998. Profile hidden Markov models. Bioinformatics. 14: 755-63

Gribskov M. et al. 1987. Profile analysis: detection of distantly related proteins. Proc Natl Acad Sci U S A. 84(13): 4355-8.

Lima T, et al.2009. HAMAP: a database of completely sequenced microbial proteome sets and manually curated microbial protein families in UniProtKB/Swiss-Prot. Nucleic Acids Res. 37:D471-8.

Marchler-Bauer A. et al. 2015. CDD: NCBI's conserved domain database. Nucleic Acids Res., 43, D222–226.

Servant F et al. 2002. ProDom: automated clustering of homologous domains. Brief. Bioinformatics.3:246-51.

Sigrist CJ et al.2010. PROSITE, a protein domain database for functional characterization and annotation. Nucleic Acids Res. 38:D161-6.

The PRINTS protein fingerprint database: functional and evolutionary applications. Attwood, TK et al. Encyclopaedia of Genetics, Genomics, Proteomics and Bioinformatics. 2006. John Wiley & Sons, Ltd.