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TAP2
Anti-TAP2 Recombinant Antibody Products
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For Research Use Only. Not For Clinical Use.
The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance. This gene is located 7 kb telomeric to gene family member ABCB2. The protein encoded by this gene is involved in antigen presentation. This protein forms a heterodimer with ABCB2 in order to transport peptides from the cytoplasm to the endoplasmic reticulum. Mutations in this gene may be associated with ankylosing spondylitis, insulin-dependent diabetes mellitus, and celiac disease. Alternative splicing of this gene produces products which differ in peptide selectivity and level of restoration of surface expression of MHC class I molecules.
Protein class
Disease related genes, Human disease related genes, Potential drug targets, Transporters
Predicted location
Membrane
Single cell type specificity
Cell type enhanced (monocytes)
Immune cell specificity
Low immune cell specificity
Cell line specificity
Cell line enhanced (HBEC3-KT, U-251 MG)
Interaction
Heterodimer of TAP1 and TAP2 (TAP1-TAP2) (PubMed:1538751). A component of the peptide loading complex (PLC), interacts via TAPBP with MHCI heterodimer; this interaction mediates peptide-MHCI assembly (PubMed:26611325). Recruits TAPBP in a 1:1 stoichiometry (PubMed:22638925). Interacts with classical MHCI such as HLA-A*02-B2M; this interaction is obligatory for the loading of peptide epitopes (PubMed:8805302, PubMed:8630735). Interacts with non-classical MHCI molecules including HLA-E-B2M and HLA-F-B2M as well as PLC component CALR before the peptide loading (PubMed:9427624, PubMed:10605026). (Microbial infection) Interacts with Epstein-Barr virus BLNF2a. (Microbial infection) Interacts with herpes simplex virus US12/ICP47. (Microbial infection) Interacts with adenovirus E3-19K glycoprotein, which binds TAP1-TAP2 and acts as a TAPBP inhibitor, preventing TAP1-TAP2 association with MHCI.
Molecular function
Translocase
More Types Infomation
Related Diseases
Primary Immunodeficiency