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Evolución para poner fin a una relación tóxica: la ribosilación ADP en la guerra interbacteriana
Elizabeth A Mueller1, Petra Anne Levin1
1Department of Biology, Washington University in St. Louis, St. Louis, MO 63130, USA.
Cell
|November 17, 2018
Resumen
Las bacterias evolucionaron para competir por recursos mucho antes de atacar a otras células. Un nuevo estudio revela antiguas toxinas bacterianas que pueden ser antepasados de las que atacan a las células eucariotas.
Área de la Ciencia:
- Microbiología
- Biología evolutiva
- Patogénesis bacteriana
Sus antecedentes:
- Las bacterias participan en la competencia de recursos, un impulsor ecológico fundamental.
- Las toxinas bacterianas dirigidas a las células eucariotas son factores de virulencia cruciales.
- Los orígenes evolutivos de las toxinas bacterianas no se comprenden completamente.
Objetivo del estudio:
- Identificar nuevos agentes bacterianos involucrados en la competencia interbacteriana.
- Para investigar la historia evolutiva de las toxinas de la ADP-ribosiltransferasa.
Principales métodos:
- El análisis genómico comparativo.
- Estudios filogenéticos.
- Enfoques bioinformáticos para identificar los genes relacionados con las toxinas.
Principales resultados:
- Descubrimiento de familias de proteínas bacterianas no reconocidas anteriormente.
- Identificación de posibles precursores evolutivos de las toxinas dirigidas a las células eucariotas.
- Evidencia que sugiere orígenes antiguos para familias específicas de toxinas.
Conclusiones:
- La competencia entre bacterias ha impulsado la evolución de nuevas armas bacterianas.
- Estos hallazgos arrojan luz sobre la evolución temprana de las toxinas bacterianas.
- Los jugadores identificados representan una adición significativa a nuestra comprensión de la guerra bacteriana.
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