TAP is an integral transmembrane protein involved in the transport of antigens from the cytoplasm to the endoplasmic reticulum for association with MHC class I molecules. It 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. TAP is inhibited by the covalent attachment of herpes simplex virus ICP47 protein, which blocks the peptide-binding site of TAP. It is 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 TAP and prevents the conformational rearrangement of TAP induced by peptide binding. TAP is also inhibited by human adenovirus E3-19K glycoprotein, which binds the TAP complex and acts as a tapasin inhibitor, preventing MHC class I/TAP association. Expression of TAP is down-regulated by human Epstein-barr virus vIL-10 protein, thereby affecting the transport of peptides into the endoplasmic reticulum and subsequent peptide loading by MHC class I molecules. TAP1 and TAP2 form a heterodimer of TAP1 and TAP2, and the peptide-binding site is shared between the cytoplasmic loops of TAP1 and TAP2. TAP, inducible by interferon gamma, belongs to the ABC transporter family, MDR subfamily.
Target |
Antigen Peptide Transporter 1 (TAP1) |
Clonality |
Polyclonal |
Reactivity |
Human |
Tested Applications |
ELISA, WB, IHC |
Host |
Rabbit |
Recommended dilutions |
WB: 1/2000, IHC-P: 1/50 - 1/100. Not tested in IHC-F. Optimal dilutions/concentrations should be determined by the end user. |
Conjugation |
Unconjugated |
Immunogen |
KLH-conjugated synthetic peptide between 765-794 amino acids from the C-terminal region of human TAP1. |
Isotype |
IgG |
Form |
Liquid |
Purification |
Purified through a protein G column, eluted with high and low pH buffers and neutralized immediately, followed by dialysis against PBS. |
Storage |
Aliquot and store at -20°C. Avoid repeated freeze/thaw cycles. |
UniProt Primary AC |
Q03518 (UniProt,
ExPASy)
|
UniProt Secondary AC |
Q16149, Q96CP4 |
UniProt Entry Name |
TAP1_HUMAN |
KEGG |
hsa:6890
|
String |
9606.ENSP00000346206
|
Molecular Weight |
Calculated MW: 87.2 kDa |
Buffer |
PBS containing 0.09% sodium azide. |
Availability |
Shipped within 5-10 working days. |
Note |
This product is for research use only. |
Research Articles on Antigen Peptide Transporter 1 (TAP1)