We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePIRSF: family classification system at the Protein Information Resource.AuthorsWu CH; Nikolskaya A; Huang H; Yeh LS; Natale DA; Vinayaka CR; Hu ZZ; Mazumder R; Kumar S; Kourtesis P; Ledley RS; Suzek BE; Arminski L; Chen Y; Zhang J; Cardenas JL; Chung S; Castro-Alvear J; Dinkov G; Barker WCPublicationNucleic acids research, 2004, Vol 32, Issue Database i, pD112ISSN1362-4962Publication typearticleDOI10.1093/nar/gkh097