PIR (Protein Information Resource) which had provided protein databases was absorbed by Swiss-Prot. Moreover, Swiss-Prot and TrEMBL were integrated into the UniProt (Universal Protein Resource) on January 1, 2005.Because of this integration, UniProt consists of 2 databases, which are UniProt/Swiss-Prot originating in Swiss-Prot and UniProt/TrEMBL based on TrEMBL.
DDBJ search/analysis services have provided PIR and Swiss-Prot separately. However, according to the above situation, Swiss-Prot will be updated to UniProt/Swiss-Prot on April 15. PIR will be deleted because which had been included in UniProt/Swiss-Prot Additionally, integration of UniProt/TrEMBL to UniProt/Swiss-Prot will be scheduled On June 15.
As a result of these integration, 3 databases will be used as an updated UniProt database.