PvGAMA reticulocyte binding activity: predicting conserved functional regions by natural selection analysis

Luis A. Baquero, Darwin A. Moreno-Pérez, Diego Garzón-Ospina, Johanna Forero-Rodríguez, Heidy D. Ortiz-Suárez, Manuel A. Patarroyo

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Background: Adhesin proteins are used by Plasmodium parasites to bind and invade target cells. Hence, characterising molecules that participate in reticulocyte interaction is key to understanding the molecular basis of Plasmodium vivax invasion. This study focused on predicting functionally restricted regions of the P. vivax GPI-anchored micronemal antigen (PvGAMA) and characterising their reticulocyte binding activity. Results: The pvgama gene was initially found in P. vivax VCG-I strain schizonts. According to the genetic diversity analysis, PvGAMA displayed a size polymorphism very common for antigenic P. vivax proteins. Two regions along the antigen sequence were highly conserved among species, having a negative natural selection signal. Interestingly, these regions revealed a functional role regarding preferential target cell adhesion. Conclusions: To our knowledge, this study describes PvGAMA reticulocyte binding properties for the first time. Conserved functional regions were predicted according to natural selection analysis and their binding ability was confirmed. These findings support the notion that PvGAMA may have an important role in P. vivax merozoite adhesion to its target cells.

Original languageEnglish (US)
Article number251
JournalParasites and Vectors
Volume10
Issue number1
DOIs
StatePublished - May 19 2017
Externally publishedYes

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Plasmodium vivax
Genetic Selection
Reticulocytes
Antigens
Schizonts
Merozoites
Plasmodium
Cell Adhesion
Parasites
Proteins

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Infectious Diseases

Cite this

Baquero, L. A., Moreno-Pérez, D. A., Garzón-Ospina, D., Forero-Rodríguez, J., Ortiz-Suárez, H. D., & Patarroyo, M. A. (2017). PvGAMA reticulocyte binding activity: predicting conserved functional regions by natural selection analysis. Parasites and Vectors, 10(1), [251]. https://doi.org/10.1186/s13071-017-2183-8
Baquero, Luis A. ; Moreno-Pérez, Darwin A. ; Garzón-Ospina, Diego ; Forero-Rodríguez, Johanna ; Ortiz-Suárez, Heidy D. ; Patarroyo, Manuel A. / PvGAMA reticulocyte binding activity : predicting conserved functional regions by natural selection analysis. In: Parasites and Vectors. 2017 ; Vol. 10, No. 1.
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Baquero, LA, Moreno-Pérez, DA, Garzón-Ospina, D, Forero-Rodríguez, J, Ortiz-Suárez, HD & Patarroyo, MA 2017, 'PvGAMA reticulocyte binding activity: predicting conserved functional regions by natural selection analysis', Parasites and Vectors, vol. 10, no. 1, 251. https://doi.org/10.1186/s13071-017-2183-8

PvGAMA reticulocyte binding activity : predicting conserved functional regions by natural selection analysis. / Baquero, Luis A.; Moreno-Pérez, Darwin A.; Garzón-Ospina, Diego; Forero-Rodríguez, Johanna; Ortiz-Suárez, Heidy D.; Patarroyo, Manuel A.

In: Parasites and Vectors, Vol. 10, No. 1, 251, 19.05.2017.

Research output: Contribution to journalArticle

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T2 - predicting conserved functional regions by natural selection analysis

AU - Baquero, Luis A.

AU - Moreno-Pérez, Darwin A.

AU - Garzón-Ospina, Diego

AU - Forero-Rodríguez, Johanna

AU - Ortiz-Suárez, Heidy D.

AU - Patarroyo, Manuel A.

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Y1 - 2017/5/19

N2 - Background: Adhesin proteins are used by Plasmodium parasites to bind and invade target cells. Hence, characterising molecules that participate in reticulocyte interaction is key to understanding the molecular basis of Plasmodium vivax invasion. This study focused on predicting functionally restricted regions of the P. vivax GPI-anchored micronemal antigen (PvGAMA) and characterising their reticulocyte binding activity. Results: The pvgama gene was initially found in P. vivax VCG-I strain schizonts. According to the genetic diversity analysis, PvGAMA displayed a size polymorphism very common for antigenic P. vivax proteins. Two regions along the antigen sequence were highly conserved among species, having a negative natural selection signal. Interestingly, these regions revealed a functional role regarding preferential target cell adhesion. Conclusions: To our knowledge, this study describes PvGAMA reticulocyte binding properties for the first time. Conserved functional regions were predicted according to natural selection analysis and their binding ability was confirmed. These findings support the notion that PvGAMA may have an important role in P. vivax merozoite adhesion to its target cells.

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