Identification |
HMDB Protein ID
| CDBP04770 |
Secondary Accession Numbers
| Not Available |
Name
| Antigen peptide transporter 2 |
Description
| Not Available |
Synonyms
|
- APT2
- ATP-binding cassette sub-family B member 3
- PSF-2
- Peptide supply factor 2
- Peptide transporter PSF2
- Peptide transporter TAP2
- Peptide transporter involved in antigen processing 2
- Really interesting new gene 11 protein
|
Gene Name
| TAP2 |
Protein Type
| Transporter |
Biological Properties |
General Function
| Involved in ATP binding |
Specific 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 |
GO Classification
|
Component |
membrane part |
intrinsic to membrane |
integral to membrane |
membrane |
cell part |
Function |
peptide transporter activity |
transmembrane transporter activity |
atpase activity |
active transmembrane transporter activity |
transporter activity |
primary active transmembrane transporter activity |
substrate-specific transporter activity |
p-p-bond-hydrolysis-driven transmembrane transporter activity |
nucleoside-triphosphatase activity |
hydrolase activity, acting on acid anhydrides |
atpase activity, coupled to transmembrane movement of substances |
hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides |
binding |
pyrophosphatase activity |
nucleotide binding |
catalytic activity |
hydrolase activity |
nucleoside binding |
purine nucleoside binding |
adenyl nucleotide binding |
adenyl ribonucleotide binding |
atp binding |
Process |
peptide transport |
establishment of localization |
transport |
transmembrane transport |
|
Cellular Location
|
- Endoplasmic reticulum membrane
- Multi-pass membrane protein
|
Pathways
|
Not Available
|
Gene Properties |
Chromosome Location
| Chromosome:6 |
Locus
| 6p21.3 |
SNPs
| TAP2 |
Gene Sequence
|
>4062 bp
ATGCGGCTCCCTGACCTGAGACCCTGGACCTCCCTGCTGCTGGTGGACGCGGCTTTACTG
TGGCTGCTTCAGGGCCCTCTGGGGACTTTGCTTCCTCAAGGGCTGCCAGGACTATGGCTG
GAGGGGACCCTGCGGCTGGGAGGGCTGTGGGGGCTGCTAAAGCTAAGAGGGCTGCTGGGA
TTTGTGGGGACACTGCTGCTCCCGCTCTGTCTGGCCACCCCCCTGACTGTCTCCCTGAGA
GCCCTGGTCGCGGGGGCCTCACGTGCTCCCCCAGCCAGAGTCGCTTCAGCCCCTTGGAGC
TGGCTGCTGGTGGGGTACGGGGCTGCGGGGCTCAGCTGGTCACTGTGGGCTGTTCTGAGC
CCTCCTGGAGCCCAGGAGAAGGAGCAGGACCAGGTGAACAACAAAGTCTTGATGTGGAGG
CTGCTGAAGCTCTCCAGGCCGGACCTGCCTCTCCTCGTTGCCGCCTTCTTCTTCCTTGTC
CTTGCTGTTTTGGGTGAGACATTAATCCCTCACTATTCTGGTCGTGTGATTGACATCCTG
GGAGGTGATTTTGACCCCCATGCCTTTGCCAGTGCCATCTTCTTCATGTGCCTCTTCTCC
TTTGGCAGCTCACTGTCTGCAGGCTGCCGAGGAGGCTGCTTCACCTACACCATGTCTCGA
ATCAACTTGCGGATCCGGGAGCAGCTTTTCTCCTCCCTGCTGCGCCAGGACCTCGGTTTC
TTCCAGGAGACTAAGACAGGGGAGCTGAACTCACGGCTGAGCTCGGATACCACCCTGATG
AGTAACTGGCTTCCTTTAAATGCCAATGTGCTCTTGCGAAGCCTGGTGAAAGTGGTGGGG
CTGTATGGCTTCATGCTCAGCATATCGCCTCGACTCACCCTCCTTTCTCTGCTGCACATG
CCCTTCACAATAGCAGCGGAGAAGGTGTACAACACCCGCCATCAGGAAGTGCTTCGGGAG
ATCCAGGATGCAGTGGCCAGGGCGGGGCAGGTGGTGCGGGAAGCCGTTGGAGGGCTGCAG
ACCGTTCGCAGTTTTGGGGCCGAGGAGCATGAAGTCTGTCGCTATAAAGAGGCCCTTGAA
CAATGTCGGCAGCTGTATTGGCGGAGAGACCTGGAACGCGCCTTGTACCTGCTCATAAGG
AGGGTGCTGCACTTGGGGGTGCAGATGCTGATGCTGAGCTGTGGGCTGCAGCAGATGCAG
GATGGGGAGCTCACCCAGGGCAGCCTGCTTTCCTTTATGATCTACCAGGAGAGCGTGGGG
AGCTATGTGCAGACCCTGGTATACATATATGGGGATATGCTCAGCAACGTGGGAGCTGCA
GAGAAGGTTTTCTCCTACATGGACCGACAGCCAAATCTGCCTTCACCTGGCACGCTTGCC
CCCACCACTCTGCAGGGGGTTGTGAAATTCCAAGACGTCTCCTTTGCATATCCCAATCGC
CCTGACAGGCCTGTGCTCAAGGGGCTGACGTTTACCCTACGTCCTGGTGAGGTGACGGCG
CTGGTGGGACCCAATGGGTCTGGGAAGAGCACAGTGGCTGCCCTGCTGCAGAATCTGTAC
CAGCCCACAGGGGGACAGGTGCTGCTGGATGAAAAGCCCATCTCACAGTATGAACACTGC
TACCTGCACAGCCAGGTGGTTTCAGTTGGGCAGGAGCCTGTGCTGTTCTCCGGTTCTGTG
AGGAACAACATTACTTATGGGCTGCAGAGCTGCGAAGATGATAAGGTGATGGCGGCTGCC
CAGGCTGCCCACGCAGATGACTTCATCCAGGAAATGGAGCATGGAATATACACAGATGTA
GGGGAGAAGGGAAGCCAGCTGGCTGCGGGACAGAAACAACGTCTGGCCATTGCCCGGGCC
CTTGTACGAGACCCGCGGGTCCTCATCCTGGATGAGGCTACTAGTGCCCTAGATGTGCAG
TGCGAGCAGGCCCTGCAGGACTGGAATTCCCGTGGGGATCGCACAGTGCTGGTGATTGCT
CACAGGCTGCAGACAGTTCAGCGCGCCCACCAGATCCTGGTGCTCCAGGAGGGCAAGCTG
CAGAAGCTTGCCCAGCTCTAG
|
Protein Properties |
Number of Residues
| 686 |
Molecular Weight
| 75663.2 |
Theoretical pI
| 8.1 |
Pfam Domain Function
|
|
Signals
|
|
Transmembrane Regions
|
- ["7-27", "57-77", "99-119", "149-169", "188-208", "267-287", "294-314", "375-395", "409-429"]
|
Protein Sequence
|
>Antigen peptide transporter 2
MRLPDLRPWTSLLLVDAALLWLLQGPLGTLLPQGLPGLWLEGTLRLGGLWGLLKLRGLLG
FVGTLLLPLCLATPLTVSLRALVAGASRAPPARVASAPWSWLLVGYGAAGLSWSLWAVLS
PPGAQEKEQDQVNNKVLMWRLLKLSRPDLPLLVAAFFFLVLAVLGETLIPHYSGRVIDIL
GGDFDPHAFASAIFFMCLFSFGSSLSAGCRGGCFTYTMSRINLRIREQLFSSLLRQDLGF
FQETKTGELNSRLSSDTTLMSNWLPLNANVLLRSLVKVVGLYGFMLSISPRLTLLSLLHM
PFTIAAEKVYNTRHQEVLREIQDAVARAGQVVREAVGGLQTVRSFGAEEHEVCRYKEALE
QCRQLYWRRDLERALYLLVRRVLHLGVQMLMLSCGLQQMQDGELTQGSLLSFMIYQESVG
SYVQTLVYIYGDMLSNVGAAEKVFSYMDRQPNLPSPGTLAPTTLQGVVKFQDVSFAYPNR
PDRPVLKGLTFTLRPGEVTALVGPNGSGKSTVAALLQNLYQPTGGQVLLDEKPISQYEHC
YLHSQVVSVGQEPVLFSGSVRNNIAYGLQSCEDDKVMAAAQAAHADDFIQEMEHGIYTDV
GEKGSQLAAGQKQRLAIARALVRDPRVLILDEATSALDVQCEQALQDWNSRGDRTVLVIA
HRLQTVQRAHQILVLQEGKLQKLAQL
|
External Links |
GenBank ID Protein
| 168983733 |
UniProtKB/Swiss-Prot ID
| Q03519 |
UniProtKB/Swiss-Prot Entry Name
| TAP2_HUMAN |
PDB IDs
|
Not Available |
GenBank Gene ID
| CT009502 |
GeneCard ID
| TAP2 |
GenAtlas ID
| TAP2 |
HGNC ID
| HGNC:44 |
References |
General References
| Not Available |