Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Experimental Proteome of Leishmania infantum promastigote and Its Usefulness for Improving Gene Annotations

Version 1 : Received: 11 August 2020 / Approved: 12 August 2020 / Online: 12 August 2020 (10:10:45 CEST)

A peer-reviewed article of this Preprint also exists.

Sanchiz, Á.; Morato, E.; Rastrojo, A.; Camacho, E.; González-de la Fuente, S. .-D.; Marina, A.; Aguado, B.; Requena, J.M. The Experimental Proteome of Leishmania infantum Promastigote and Its Usefulness for Improving Gene Annotations. Genes 2020, 11, 1036. Sanchiz, Á.; Morato, E.; Rastrojo, A.; Camacho, E.; González-de la Fuente, S. .-D.; Marina, A.; Aguado, B.; Requena, J.M. The Experimental Proteome of Leishmania infantum Promastigote and Its Usefulness for Improving Gene Annotations. Genes 2020, 11, 1036.

Journal reference: Genes 2020, 11, 1036
DOI: 10.3390/genes11091036

Abstract

Leishmania infantum is causative of visceral leishmaniasis (kala-azar), the most severe form of leishmaniasis, lethal if untreated. Few years ago, re-sequencing and de novo assembling of the L. infantum (strain JPCM5) genome was accomplished, and now we aimed to describe and characterize the experimental proteome of this species. In this work, we have performed a proteomic analysis from axenic cultured promastigotes and carried out a detailed comparison with other Leishmania experimental proteomes published to date. We identified 2,352 proteins based on the search of mass spectrometry data against a database built from the six-frame translated genome sequence of L. infantum. We have detected many proteins belonging to organelles such as glycosomes, mitochondria or flagellum, as well as many metabolic enzymes, and a large number of putative RNA binding proteins and molecular chaperones. Moreover, we listed the proteins presenting post-translational modifications, such as phosphorylations, acetylations and methylations, among others. On the other hand, the identification of peptides mapping to genomic regions previously annotated as non-coding has allowed to correct annotations, leading to N-terminal extension of protein sequences, and the uncovering of eight novel protein-coding genes. The alliance of proteomics, genomics and transcriptomics has resulted in a powerful combination for improving the L. infantum reference genome annotation.

Subject Areas

Leishmania infantum; proteome; post-translational modifications (PTMs); proteogenomics; mass spectrometry

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.