Figure 1From: Aetiology and pathogenesis of reactive arthritis: role of non-antigen-presenting effects of HLA-B27Several endoplasmic reticulum (ER)-resident chaperone molecules (tapasin, transporter-associated antigen processing (TAP), calreticulin and oxidoreductase ERp57) participate in the assembly of the mature major histocompatibility complex class I heavy chain (HC)/β2-microglobulin (β2m)/peptide complex in the ER.Back to article page