Apical membrane antigen 1 (Plasmodium berghei) (AMA1)

Apical membrane antigen 1 (AMA1) is a critical micronemal protein found in Plasmodium species, including the rodent malaria parasite Plasmodium berghei. It plays an essential role in the life cycle of the parasite by mediating the invasion of host cells, specifically the entry of merozoites into erythrocytes and sporozoites into hepatocytes (2.4.4, 3.1.4). AMA1 functions by forming a 'moving junction' complex with parasite rhoptry neck (RON) proteins, which facilitates the tight attachment and subsequent penetration of the parasite into the host cell (2.3.1, 2.4.2). Due to its indispensable role in infection, AMA1 is a primary target for malaria vaccine development and the design of inhibitory drugs (2.2.1, 2.3.2). Therapeutic strategies often focus on blocking the interaction between AMA1 and RON2 using monoclonal antibodies, inhibitory peptides like R1, or small-molecule inhibitors (2.2.2, 2.4.2). However, the high degree of genetic polymorphism in the AMA1 gene presents a significant challenge for developing a universal vaccine or drug that is effective across different parasite strains (2.3.3, 2.5.3).

Other names

AMA-1Merozoite surface antigenPbAMA1Pb66

Inhibition of the AMA1-RON2 protein-protein interaction to block moving junction formation and prevent host cell invasion.