ArticlePloS one2019
Conserved motifs in nuclear genes encoding predicted mitochondrial proteins in Trypanosoma cruzi.
Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 6 citations in OpenAlex.
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- A Global Analysis of Enzyme Compartmentalization to Glycosomes.Pathogens (Basel, Switzerland) · 2020Article
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Authors and funding
3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Trypanosoma cruzi, the protozoan parasite that causes Chagas' disease, exhibits peculiar biological features. Among them, the presence of a unique mitochondrion is remarkable. Even though the mitochondrial DNA constitutes up to 25% of total cellular DNA, the structure and functionality of the mitochondrion are dependent on the expression of the nuclear genome. As in other eukaryotes, specific peptide signals have been proposed to drive the mitochondrial localization of a subset of trypanosomatid proteins. However, there are mitochondrial proteins encoded in the nuclear genome that lack of a peptide signal. In other eukaryotes, alternative protein targeting to subcellular organelles via mRNA localization has also been recognized and specific mRNA localization towards the mitochondria has been described. With the aim of seeking for mitochondrial localization signals in T. cruzi, we developed a strategy to build a comprehensive database of nuclear genes encoding predicted mitochondrial proteins (MiNT) in the TriTryps (T. cruzi, T. brucei and L. major). We found that approximately 15% of their nuclear genome encodes mitochondrial products. In T. cruzi the MiNT database reaches 1438 genes and a conserved peptide signal, M(L/F) R (R/S) SS, named TryM-TaPe is found in 60% of these genes, suggesting that the canonical mRNA guidance mechanism is present. In addition, the search for compositional signals in the transcripts of T. cruzi MiNT genes produce a list, being worth to note a conserved non-translated element represented by the consensus sequence DARRVSG. Taking into account its reported interaction with the T. brucei TRRM3 protein which is enriched in the mitochondrial membrane fraction, we here suggest a putative zip code role for this element. Globally, here we provide an inventory of the mitochondrial proteins in T. cruzi and give evidence for the existence of both peptide and mRNA signals specific to nuclear encoded mitochondrial proteins.
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