Rhoptry

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The rhoptries are club-shaped secretory organelles, often located near the apical end of apicomplexan intracellular parasites. Rhoptries are secreted during host cell invasion, and rhoptry proteins are found within the lumen and the membrane of very early stages of the forming parasitophorous vacuole. Sam-Yellowe et al. (1988). Rhoptries are distinguished (somewhat) from micronemes by the club-like shape of rhoptries.

References

Sam-Yellowe TY, H Shio & ME Perkins (1988), Secretion of Plasmodium falciparum rhoptry protein into the plasma membrane of host erythrocytes. J. Cell Biol. 106: 1507-1513.

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