A large, multisubunit complex which consists of the MHC class I-beta 2 microglobulin dimer, the transporter associated with antigen presentation (TAP), tapasin (an MHC-encoded membrane protein), the chaperone calreticulin and the thiol oxidoreductase ERp57. Functions in the assembly of peptides with newly synthesized MHC class I molecules. [GOC:jl, PMID:10631934]
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Collection
C5: Ontology GO: Gene Ontology GO:CC: GO Cellular Component