Journal
BIOCHEMICAL JOURNAL
Volume 474, Issue -, Pages 897-905Publisher
PORTLAND PRESS LTD
DOI: 10.1042/BCJ20161030
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Funding
- Spanish Ministry of Economy [SAF2013-43656-R]
- National Institutes of Health grant [1R21AI115063-01]
- Marie Curie Initial Training Network [GA 608295]
- CERCA Programme (Generalitat de Catalunya)
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The obligate intracellular lifestyle of Plasmodium falciparum and the difficulties in obtaining sufficient amounts of biological material have hampered the study of specific metabolic pathways in the malaria parasite. Thus, for example, the pools of sugar nucleotides required to fuel glycosylation reactions have never been studied in-depth in well-synchronized asexual parasites or in other stages of its life cycle. These metabolites are of critical importance, especially considering the renewed interest in the presence of N-, O-, and other glycans in key parasite proteins. In this work, we adapted a liquid chromatography tandem mass spectrometry (LC-MS/MS) method based on the use of porous graphitic carbon (PGC) columns and MS-friendly solvents to quantify sugar nucleotides in the malaria parasite. We report the thorough quantification of the pools of these metabolites throughout the intraerythrocytic cycle of P. falciparum. The sensitivity of the method enabled, for the first time, the targeted analysis of these glycosylation precursors in gametocytes, the parasite sexual stages that are transmissible to the mosquito vector.
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