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单词 Malaria pigment
释义

Malaria pigment

英语百科

Hemozoin

(重定向自Malaria pigment)
Plasmodium falciparum hemozoin crystals under polarised light.
Human red blood cell infected by the malaria parasite Plasmodium falciparum, showing a residual body with brown hemozoin.
Transport vesicle delivering a heme detoxification protein (hdp) to a malaria food vacuole (fv) containing crystals of hemozoin (hz). Scale bar is 0.5 µm.[12]
Isolated P.falciparum hemozoin

Haemozoin is a disposal product formed from the digestion of blood by some blood-feeding parasites. These hematophagous organisms such as Malaria parasites (Plasmodium spp.), Rhodnius and Schistosoma digest haemoglobin and release high quantities of free heme, which is the non-protein component of hemoglobin. A heme is a prosthetic group that consists of an iron atom contained in the center of a heterocyclic porphyrin ring. Free heme is toxic to cells, so the parasites convert it into an insoluble crystalline form called hemozoin. In malaria parasites, hemozoin is often called malaria pigment.

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