All identified protein sequences were included in the hepatocyte protein sequences database. The protein sequences were labeled with corresponding functional annotation results. Any identified protein sequences that were not successfully annotated are labeled with 'Uncharacterized protein'. Total 50,951 annotated and 40,528 uncharacterized protein sequences generated from the Tupaia hepatocytes transcriptome were combined into the database. A numeric ID (gi) was generated for each protein sequence in the database. The corresponding cDNA sequences were deposited to NCBI Transcriptome Shotgun Assembly (TSA) database of GenBank with accession number from JU120276 to JU170736 after removal of cDNAs shorter than 200 bp and a vector sequence.