Antigen peptide transporter 2 (Protein name
), TAP2_HUMAN from NCBI database.
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General Annotation
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Antigen Annotation
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Predicted Eptitope
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Gene name:
TAP2(ABCB3;PSF2;RING11;Y1);
Protein name:
Antigen peptide transporter 2(APT2);
Alternative:
Peptide supply factor 2;ATP-binding cassette sub-family B member 3;Peptide transporter TAP2;Peptide transporter PSF2(PSF-2);Really interesting new gene 11 protein;Peptide transporter involved in antigen processing 2;
Organism:
Human (Homo sapiens).
General Annotation
Sub Unit:
Heterodimer of TAP1 and TAP2. Interacts with Epstein-Barr virus BLNF2a.
Function:
Involved in the transport of antigens from the cytoplasm to the endoplasmic reticulum for association with MHC class I molecules. Also acts as a molecular scaffold for the final stage of MHC class I folding, namely the binding of peptide. Nascent MHC class I molecules associate with TAP via tapasin. Inhibited by the covalent attachment of herpes simplex virus ICP47 protein, which blocks the peptide-binding site of TAP. Inhibited by human cytomegalovirus US6 glycoprotein, which binds to the lumenal side of the TAP complex and inhibits peptide translocation by specifically blocking ATP-binding to TAP1 and prevents the conformational rearrangement of TAP induced by peptide binding. Inhibited by human adenovirus E3-19K glycoprotein, which binds the TAP complex and acts as a tapasin inhibitor, preventing MHC class I/TAP association.
Subcellular Location:
Endoplasmic reticulum membrane
Multi-pass membrane protein
The transmembrane segments seem to form a pore in the membrane.
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ALLELE TAP2*01:01) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ALLELE TAP2*01:01/TAP2*02:01) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ALLELE TAP2*02:01) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ALLELE TAP2*01:02) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ALLELE TAP2*BKY2) (ISOFORM 1);VARIANT TAP2*BKY2 VAL-577
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2);VARIANT ILE-379
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ALLELE TAP2*01:01) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ALLELE TAP2*BKY2) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA] (ALLELES TAP2*03A AND TAP2*BKY2)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 65-686 (ALLELE TAP2*01:03) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 204-686 (ISOFORM 1);VARIANTS THR-374 AND ILE-467
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 517-645 (ALLELE TAP2*01:01/TAP2*01:02) (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 517-645 (ALLELE TAP2*01:01/TAP2*01:02) (ISOFORM 1)
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Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: VARIANTS THR-374; ILE-379; ILE-467; SER-513 THR-565; CYS-651; ALA-665 AND GLN-GLU-GLY-GLN-ASP-LEU-TYR-SER-ARG-LEU-VAL-GLN-GLN-ARG-LEU-MET-ASP-686 INS;DEFINITION OF ALLELES