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Pathogens
Article . 2018 . Peer-reviewed
License: CC BY
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Pathogens
Article
License: CC BY
Data sources: UnpayWall
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PubMed Central
Article . 2018
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Pathogens
Article . 2018
Data sources: DOAJ
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Acidocalcisome-Mitochondrion Membrane Contact Sites in Trypanosoma brucei

Authors: Srinivasan Ramakrishnan; Beejan Asady; Roberto Docampo;

Acidocalcisome-Mitochondrion Membrane Contact Sites in Trypanosoma brucei

Abstract

Membrane contact sites are regions of close apposition between two organelles, typically less than 30 nanometers apart, that facilitate transfer of biomolecules. The presence of contact sites has been demonstrated in yeast, plants, and mammalian cells. Here, we investigated the presence of such contact sites in Trypanosoma brucei. In mammalian cells, endoplasmic reticulum-mitochondria contact sites facilitate mitochondrial uptake of Ca2+ released by the ER-located inositol 1,4,5-trisphosphate receptor (InsP3R). However, the InsP3R in trypanosomes localizes to acidocalcisomes, which serve as major Ca2+ stores in these parasites. In this work, we have used super-resolution structured illumination microscopy and electron microscopy to identify membrane contact sites that exist between acidocalcisomes and mitochondria. Furthermore, we have confirmed the close association of these organelles using proximity ligation assays. Characterization of these contact sites may be a necessary starting point towards unraveling the role of Ca2+ in regulating trypanosome bioenergetics.

Keywords

R, membrane contact sites, Medicine, trypanosomes, calcium signaling, Article

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
28
Top 10%
Average
Top 10%
Green
gold