This family represents the immunodominant surface antigen of Theileria parasites including equi merozoite antigen-1 (EMA-1) and equi merozoite antigen-2 (EMA-2). The protein shows variation at a putative glycosylation site, a potential mechanism for host immune response evasion.
Jiyao W et al.(2023). "The conserved domain database in 2023.",