The quality control of MHC class I peptide loading.
The quality control of MHC class I peptide loading.
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DOI:
10.1016/j.ceb.2008.09.005
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发表时间:
2008-12
影响因子:
7.5
通讯作者:
Cresswell P
中科院分区:
文献类型:
--
作者:
Wearsch PA;Cresswell P
The assembly of Major Histocompatibility Complex (MHC) class I molecules is one of the more widely studied examples of protein folding in the endoplasmic reticulum (ER). It is also one of the most unusual cases of glycoprotein quality control involving the thiol oxidoreductase ERp57 and the lectin-like chaperones calnexin and calreticulin. The multi-step assembly of MHC class I heavy chain with β2microglobulin and peptide is facilitated by these ER-resident proteins and further tailored by the involvement of a peptide transporter, aminopeptidases, and the chaperone-like molecule tapasin. Here we summarize recent progress in understanding the roles of these general and class I-specific ER proteins in facilitating the optimal assembly of MHC class I molecules with high affinity peptides for antigen presentation.
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