Cytochrome c and c1 heme lyases are essential in Plasmodium berghei.

Abstract:

:Malaria parasites possess a de novo heme synthetic pathway. Interestingly, this pathway is dispensable during the blood stages of development in mammalian hosts. The assembly of the two most important hemeproteins, cytochromes c and c1, is mediated by cytochrome heme lyase enzymes. Plasmodium spp. possess two cytochrome heme lyases encoded by separate genes. Given the redundancy of heme synthesis, we sought to determine if heme lyase function also exhibits redundancy. To answer this question, we performed gene knockout experiments. We found that the PBANKA_143950 and PBANKA_0602600 Plasmodium berghei genes encoding cytochrome c (Pbcchl) and cytochrome c1 (Pbcc1hl) heme lyases, respectively, can only be disrupted when a complementary gene is present. In contrast, four genes in the de novo heme synthesis pathway can be disrupted without complementation. This work provides evidence that Pbcchl and Pbcc1hl are both essential and thus may be antimalarial targets.

journal_name

Mol Biochem Parasitol

authors

Posayapisit N,Songsungthong W,Koonyosying P,Falade MO,Uthaipibull C,Yuthavong Y,Shaw PJ,Kamchonwongpaisan S

doi

10.1016/j.molbiopara.2016.08.003

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

32-36

issue

1-2

eissn

0166-6851

issn

1872-9428

pii

S0166-6851(16)30110-4

journal_volume

210

pub_type

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