HLA Class II Histocompatibility Antigen, DR Beta 4 Chain

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

**Definition:** HLA class II histocompatibility antigen, DR beta 4 chain (266 aa, ~30 kDa) is encoded by the human HLA-DRB4 gene. This protein is involved in the presentation of peptides derived from extracellular proteins.

**Synonyms:** - HLA-DRB4 - MHC Class II Antigen DRB4