The Plasmodium heme detoxification protein functions in mitochondrial protein synthesis.

HDP is essential for mitochondrial protein synthesis in Plasmodium, with knockout disrupting electron flow and causing developmental arrest, independent of hemozoin formation.

• Why it matters: Understanding the mechanisms of heme detoxification is crucial for malaria parasite survival, but the role of HDP in heme biomineralization was unclear, limiting targeted drug development.
• What they did: Using genetic, microscopic, bioenergetic, and proteomic methods, the study localized HDP to mitochondria and demonstrated its necessity for mitochondrial function and protein synthesis, not hemozoin formation.
• The result: Disruption of HDP impairs mitochondrial electron transport and halts parasite development, highlighting its potential as a target for interventions that impair mitochondrial function rather than heme detoxification.