ATS is the intracellular and relatively conserved acidic terminal segment of the Plasmodium falciparum erythrocyte membrane protein-1 (PfEMP1) [1]. this domain appears to be present in all variants of the highly polymorphic PfEMP1 proteins.

1: Sub-grouping of Plasmodium falciparum 3D7 var genes based on sequence analysis of coding and non-coding regions. Lavstsen T, Salanti A, Jensen AT, Arnot DE, Theander TG; Malar J. 2003;2:27. PMID:14565852