Heme and parasite proteins (No unified abbreviation)

Heme is an iron-containing prosthetic group essential for many biological functions, including electron transfer, catalysis, oxygen transport, and signal transduction. Parasites such as *Plasmodium* and trematodes rely on specialized heme-binding proteins to detoxify free heme arising from hemoglobin degradation, chiefly through conversion to hemozoin (malaria pigment). Heme homeostasis in parasites is critical for survival, and these heme-interacting proteins (e.g., Heme detoxification protein, MF6p/FhHDM-1) are central targets for antimalarial drug discovery. Drugs like chloroquine and mefloquine act by interfering with heme detoxification pathways, causing toxic accumulation of heme and parasite death. These proteins and their interactions with heme are distinct from, but closely related to, other heme-binding proteins in human biology (hemoglobin, cytochromes, etc.), and are associated with immune modulation, signaling regulation, and disease pathogenesis in the host-parasite interface. Note: The original target, "Heme and parasite proteins," is not a canonical, singular molecular target and should be split into specific entities (e.g., "Heme detoxification protein," "Helminth defense molecule MF6p/FhHDM-1", or simply "Heme" as a small molecule), depending on context.

Other names

Heme detoxification protein (HDP)Helminth defense molecule (HDM)Hemoglobin (in context of parasite biology)Histidine-rich proteins (HRP)

Inhibits heme detoxification (prevents conversion of toxic free heme to non-toxic hemozoin, leading to parasite death) Disrupts heme binding and trafficking Promotes accumulation of toxic heme