CDD: NCBI's conserved domain database.
Aron Marchler-BauerMyra K. DerbyshireNoreen R. GonzalesShennan LuFarideh ChitsazLewis Y. GeerRenata C. GeerJane HeMarc GwadzDavid I. HurwitzChristopher J. LanczyckiFu LuGabriele H. MarchlerJames S. SongNarmada ThankiZhouxi WangRoxanne A. YamashitaDachuan ZhangChanjuan ZhengStephen H. BryantPublished in: Nucleic Acids Res. (2015)