ATP Binding Cassette Transporter, Subfamily B, Member 2

**Definition:** An ATP-binding cassette, sub-family B protein (ATP BINDING CASSETTE TRANSPORTER, SUBFAMILY B) that functions in the transport of ANTIGENS from the CYTOPLASM to the ENDOPLASMIC RETICULUM for association with HISTOCOMPATIBILITY ANTIGENS CLASS I peptides. It also acts as a molecular scaffold for the final stage of MHC class I PROTEIN FOLDING.

**Tree numbers:** - D09.400.430.890.020.400.305 - D12.776.157.530.100.075.250 - D12.776.157.530.450.074.500.500.250.250 - D12.776.395.550.020.400.305 - D12.776.543.550.192.400.305 - D12.776.543.585.100.200.250 - D12.776.543.585.450.074.500.500.250.250

**Synonyms:** - Peptide Transporter TAP1 - Peptide Transporter PSF1 - ABCB2 Protein - ATP Binding Cassette Transporter, Sub-Family B, Member 2 - Antigen Peptide Transporter-1 - Transporter 1, ATP-Binding Cassette, Sub-Family B (MDR-TAP) - ATP-Binding Cassette Sub-Family B Member 2 - TAP-1 Protein - TAP1 Protein - RING4 Protein - Really Interesting New Gene 4 Protein