Does IPI contain data from UniProtKB/TrEMBLnew?
No. IPI has never contained data derived from UniProtKB/TrEMBLnew, the update database for the UniProt Knowledgebase. Entries were added to IPI once the data in UniProtKB/TrEMBLnew was promoted to UniProtKB/TrEMBL in the subsequent TrEMBL release. UniProtKB/TrEMBLnew has subsequently been discontinued. The last release was made on 22nd June 2004. All protein translations submitted to the Genbank/EMBL/DDBJ nucleotide sequence databases are now automatically incorporated into the next incremental UniProt Knowledgebase release (these occur fortnightly) and subsequently into IPI.