Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Characterization and Cellular Localization of a SFT-2/Got-1- like Transporter Protein of Leishmania infantum

Version 1 : Received: 29 December 2022 / Approved: 3 January 2023 / Online: 3 January 2023 (07:38:58 CET)

How to cite: Teixeira-Pinto, L.A.; Lechuga, G.C.; Napoleão-Pêgo, P.; De-Simone, S.G. Characterization and Cellular Localization of a SFT-2/Got-1- like Transporter Protein of Leishmania infantum. Preprints 2023, 2023010013. https://doi.org/10.20944/preprints202301.0013.v1 Teixeira-Pinto, L.A.; Lechuga, G.C.; Napoleão-Pêgo, P.; De-Simone, S.G. Characterization and Cellular Localization of a SFT-2/Got-1- like Transporter Protein of Leishmania infantum. Preprints 2023, 2023010013. https://doi.org/10.20944/preprints202301.0013.v1

Abstract

Background: Visceral leishmaniasis affects approximately 12 million people worldwide. Current existing drugs cause several side effects and resistance, the identification of new therapeutic targets for the development of new drugs is necessary. The vesicular trafficking in the parasite flagellar pocket is essential for parasite survival and proliferation, but little is known about the proteins involved in the endocytic/secretory pathways. In this work, we are describing the characterization of a transporter cargo protein SFT-2/Got-1 like in Leishmania infantum. Material and Methods: Using bioinformatics tools, the putative Got-1 protein A4HSK3 was characterized structurally and phylogenetically. Molecular biology was used to clone and express the protein and confocal fluorescence to determine its subcellular localization. Results: The Got-1 like protein presents four alpha helix TM conserved domains (aa38-aa147) characteristics of the Got-1/SFT-2 family proteins and an important Pen-2 conserved motif LGDYXXF located in the extracellular loop. Confocal microscopy suggests that Got-1/SFT-2 like is localized in the flagellar pocket, and is partially co-localized with the L. infantum presenilin-like protein. Phylogenetically, the Leishmania sp Got-1 like is contained in a subgroup of proteins clearly detached from the other Trypanosomatidae, such as T. cruzi and T. brucei. Conclusions: Our data show the presence of an important transported proteins, and its colocalization with the presenilin aspartyl protease in the flagellar pocket of the L. infantum open new perspectives to identify novel targets, which can be an alternative therapeutic strategy against leishmaniasis.

Keywords

Leishmania infantum; STF2/Got-1 family; cloning; cellular localization; membrane topology

Subject

Biology and Life Sciences, Biochemistry and Molecular Biology

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