Abstract:
:Apicomplexans are obligate intracellular parasites that scavenge essential nutrients from their hosts via transporter proteins on their plasma membrane. The identities of the transporters that mediate amino acid uptake into apicomplexans are unknown. Here we demonstrate that members of an apicomplexan-specific protein family-the Novel Putative Transporters (NPTs)-play key roles in the uptake of cationic amino acids. We show that an NPT from Toxoplasma gondii (TgNPT1) is a selective arginine transporter that is essential for parasite survival and virulence. We also demonstrate that a homologue of TgNPT1 from the malaria parasite Plasmodium berghei (PbNPT1), shown previously to be essential for the sexual gametocyte stage of the parasite, is a cationic amino acid transporter. This reveals a role for cationic amino acid scavenging in gametocyte biology. Our study demonstrates a critical role for amino acid transporters in the survival, virulence and life cycle progression of these parasites.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Rajendran E,Hapuarachchi SV,Miller CM,Fairweather SJ,Cai Y,Smith NC,Cockburn IA,Bröer S,Kirk K,van Dooren GGdoi
10.1038/ncomms14455subject
Has Abstractpub_date
2017-02-16 00:00:00pages
14455issn
2041-1723pii
ncomms14455journal_volume
8pub_type
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