HLA-Bw4 Antigen

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** HLA-BW4 antigen is the public epitope associated with the sequence of amino acid residues at positions 77-83 in the alpha one domain of the HLA class I heavy chain. These epitopes exist on proteins encoded by certain alleles of both the human HLA-B gene and the human HLA-A gene.