PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11342555-1 2001 An HLA-B27-restricted self-octapeptide known to react with an alloreactive T-cell receptor has been modified by systematic substitution of a beta-amino acid for the natural alpha-amino acid residue, over the whole length of the parent epitope. Amino Acids 173-189 major histocompatibility complex, class I, B Homo sapiens 3-10