<unk>  antigen/chemokine receptor (DARC), also known as Fy glycoprotein (FY) or CD234 (Cluster of Differentiation 234), is a protein that in humans is encoded by the ACKR1 gene. The<unk>  antigen is located on the surface of red blood cells, and is named after the patient in whom it was discovered. The protein encoded by this gene is a glycosylated membrane protein and a non-specific receptor for several chemokines. The protein is also the receptor for the human malarial parasites Plasmodium vivax, Plasmodium knowlesi and simian malarial parasite Plasmodium cynomolgi. Polymorphisms in this gene are the basis of the<unk>  blood group system.
Duffy antigen system
Kidd antigen system
Ii antigen system
MNS antigen system
Lewis antigen system
Yt antigen system
Lymphocyte function-associated antigen 1
Lutheran antigen system