HLA Class II Histocompatibility Antigen, DQ Alpha 1 Chain

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor

**Definition:** HLA class II histocompatibility antigen, DQ alpha 1 chain (254 aa, ~28 kDa) is encoded by the human HLA-DQA1 gene. This protein is involved in modulation of peptide antigen binding and endocytosis.

**Synonyms:** - DC-1 Alpha Chain - DC-alpha - HLA-DCA - HLA-DQA1 - MHC Class II DQA1