micronemeとは 意味・読み方・使い方

Micronemes are cellular organs, or organelles, possessed by Apicomplexa protozoans. They are specialized secretory organelles important for gliding motility and host cell invasion. These organelles secrete several proteins such as Plasmodium falciparum apical membrane antigen-1, or PfAMA1, and Erythrocyte family antigen, or EBA, family proteins. These proteins specialize in binding to erythrocyte surface receptors and facilitating erythrocyte entry. Only by this initial chemical exchange can the parasite enter into the erythrocyte via actin-myosin motor complex. This is a crucial organelle for the P. falciparum parasite. It has been posited that this organelle works cooperatively with its counterpart organelle, the rhoptry, which also is a secretory organelle. It is possible that, while the microneme initiates erythrocyte-binding, the rhoptry secretes proteins to create the PVM, or the Parasitophorous Vacuolar Membrane, in which the parasite can survive and reproduce.