Antigen Peptide Transporter 1

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Antigen peptide transporter 1 (808 aa, ~87 kDa) is encoded by the human TAP1 gene. This protein plays a role in cytoplasmic antigen transport and subsequent presentation by MHC class I molecules.

**Synonyms:** - ABC Transporter, MHC 1 - APT1 - ATP-Binding Cassette Sub-Family B Member 2 - ATP-Binding Cassette, Sub-Family B, Member 2 - PSF-1 - Peptide Supply Factor 1 - Peptide Transporter Involved In Antigen Processing 1 - Peptide Transporter PSF1 - Peptide Transporter TAP1 - Really Interesting New Gene 4 Protein - TAP1 - Transporter 1, ATP-Binding Cassette, Sub-Family B - Transporter Associated With Antigen Processing