Send to

Choose Destination
Curr Opin Immunol. 1997 Feb;9(1):80-8.

Generation, intracellular transport and loading of peptides associated with MHC class I molecules.

Author information

Deutsches Krebsforschungszentrum, Abteilung für Molekulare Immunologie (0740), Im Neuenheimer Feld 280, D-69120 Heidelberg, Germany.


MHC class I molecules present antigenic peptides that are mostly derived from endogenous cytosolic proteins. Recent studies addressing the function of the proteasome and its activator complexes have advanced our understanding of the cytosolic processing of peptides. Transporters associated with antigen processing (TAPs) translocate these peptides to the endoplasmic reticulum where MHC class I molecules, which are retained in transient complexes with chaperones and TAPs, await them for binding. The sequence specificity and the peptide length preference of TAPs roughly meet the requirements of class I molecules in a range of different species, suggesting evolutionary shaping of the specificity of TAPs.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center