Abstract：
:The plasmodial CTP:phosphocholine cytidylyltransferase (PfCCT) is a promising antimalarial target, which can be inhibited to exploit the need for increased lipid biosynthesis during the erythrocytic life stage of Plasmodium falciparum. Notable structural and regulatory differences of plasmodial and mammalian CCTs offer the possibility to develop species-specific inhibitors. The aim of this study was to use CHO-MT58 cells expressing a temperature-sensitive mutant CCT for the functional characterization of PfCCT. We show that heterologous expression of wild type PfCCT restores the viability of CHO-MT58 cells at non-permissive (40 °C) temperatures, whereas catalytically perturbed or structurally destabilized PfCCT variants fail to provide rescue. Detailed in vitro characterization indicates that the H630N mutation diminishes the catalytic rate constant of PfCCT. The flow cytometry-based rescue assay provides a quantitative readout of the PfCCT function opening the possibility for the functional analysis of PfCCT and the high throughput screening of antimalarial compounds targeting plasmodial CCT.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Marton L,Hajdú F,Nagy GN,Kucsma N,Szakács G,Vértessy BGdoi
10.1038/s41598-018-27183-wsubject
Has Abstractpub_date
2018-06-12 00:00:00pages
8932issue
1issn
2045-2322pii
10.1038/s41598-018-27183-wjournal_volume
8pub_type
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