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TAP transporter : ウィキペディア英語版 | Transporter associated with antigen processing
Transporter associated with antigen processing (TAP) is a member of the ATP-binding-cassette transporter family. It delivers cytosolic peptides into the endoplasmic reticulum (ER), where they bind to nascent MHC class I molecules. The TAP structure is formed of two proteins: TAP-1 and TAP-2, which have one hydrophobic region and one ATP-binding region each. They assemble into a heterodimer, which results in a four-domain transporter. ==Function==
The TAP transporter is found in the ER lumen associated with the ''peptide-loading complex'' (PLC). This complex of β2 microglobulin, calreticulin, ERp57, TAP, tapasin, and MHC class I acts to keep hold of MHC molecules until they have been fully loaded with peptides.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Transporter associated with antigen processing」の詳細全文を読む
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