Real time measurement of in vitro peptide binding to soluble HLA-A*0201 by fluorescence polarization

The development of a sensitive biochemical assay that relies upon fluorescence polarization is reported to indicate peptide interactions with recombinant soluble human leukocyte antigens (HLA) proteins. Testing of the A*0201-specific peptides with 48 additional class I molecules demonstrates that the unique peptide binding behavior of individual HLA molecules is maintained in the assay.