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Protozoa of the genus Leishmania are intracellular parasites that cause human leishmaniasis, a disease spread mostly in the tropics and subtropics. Leishmania cycle between the midgut of female sand flies and phagolysosome of mammalian macrophages. During their life cycle they constantly encounter changing nutritional environments. To monitor the external concentration of essential nutrients, the invading parasites employ sensors that report on the availability of these nutrients; but to-date only a few sensing pathways have been identified in Leishmania. This review focuses on the Arginine Deprivation Response, which both extracellular and intracellular Leishmania utilize to monitor environmental arginine and adjust their arginine transporter (AAP3) levels accordingly. Copyright © 2021. Published by Elsevier Ltd.


Dan Zilberstein, Peter J Myler. Arginine sensing in intracellular parasitism of Leishmania. Current opinion in microbiology. 2021 Dec;64:41-46

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PMID: 34592588

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