Plasmodium falciparum Apical Membrane Antigen 1 (3D7 allele) (PfAMA1)

Plasmodium falciparum Apical Membrane Antigen 1 (AMA1) is a highly conserved type I integral membrane protein essential for the invasion of host erythrocytes by malaria merozoites (Source: UniProt P04924). It is stored in the micronemes of the parasite and translocates to the surface just prior to invasion, where it forms a critical complex with the Rhoptry Neck Protein 2 (RON2). This AMA1-RON2 interaction facilitates the formation of a moving junction, a stable attachment point that allows the parasite to propel itself into the red blood cell (Source: PubMed PMID 21252313). Because of its indispensable role in the parasite life cycle, AMA1 is a primary target for malaria vaccine development and inhibitory peptides. However, the protein exhibits significant genetic diversity, particularly in the 3D7 and other alleles, which poses a challenge for creating a universal vaccine (Source: PubMed PMID 21916638). Therapeutic strategies focus on blocking the hydrophobic groove of AMA1 to prevent RON2 binding, thereby neutralizing the parasite's ability to infect new cells. The 3D7 allele is frequently used as a reference in research and clinical trials for strain-specific vaccine efficacy.

Other names

AMA-1Apical membrane antigen 1PF3D7_0930300PF09_0303

Inhibition of the interaction between AMA1 and the Rhoptry Neck Protein 2 (RON2) complex, which prevents the formation of the moving junction and subsequent entry of the Plasmodium merozoite into the host erythrocyte (Source: PubMed PMID 21252313).