Structural highlights 
  Function 
[TPSN_HUMAN] Involved in the association of MHC class I with transporter associated with antigen processing (TAP) and in the assembly of MHC class I with peptide (peptide loading).[1] 
  References 
- ↑ Li S, Paulsson KM, Chen S, Sjogren HO, Wang P. Tapasin is required for efficient peptide binding to transporter associated with  antigen processing. J Biol Chem. 2000 Jan 21;275(3):1581-6. PMID:10636848