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Acta Biológica Colombiana
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Acta Biológica Colombiana
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Article . 2019
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El dominio STK de la proteína de resistencia a la bacteriosis vascular de yuca RXAM1 interactúa con una E3 Ubiquitin Ligasa

Authors: GIL, Juliana; LÓPEZ, Camilo;

El dominio STK de la proteína de resistencia a la bacteriosis vascular de yuca RXAM1 interactúa con una E3 Ubiquitin Ligasa

Abstract

La yuca (Manihot esculenta) representa el pilar de la seguridad alimentaria para cerca de mil millones de personas, principalmente en las zonas tropicales. Uno de los factores limitantes de la producción de yuca es la bacteriosis vascular causada por la bacteria Xanthomonas axonopodis pv. manihotis (Xam). Recientemente se identificó el gen RXam1 el cual confiere resistencia parcial de yuca a cepas de Xam. RXam1 codifica una proteína con un dominio LRR (Leucine Rich Repeats) extracelular y un dominio STK (Serina Treonina Kinasa) citoplasmático; estas proteínas son conocidas como RLKs (Receptor Like Kinases). En este estudio se realizó el tamizaje de una librería de ADNc de yuca mediante doble híbrido de levadura para identificar las posibles proteínas que interactúan con el dominio STK de RXam1. El tamizaje de 3x108 clones permitió identificar y confirmar cinco clones de ellos los cuales corresponden al mismo gen, el cual codifica para una proteína que presenta un dominio central de dedos de zinc CHY, seguido por un dominio C-terminal “RING finger” y un “Zinc ribbon” el cual fue denominado CRFE3-1 (Cassava RING Finger E3 ligase). La interacción entre STK y CRFE3-1 fue altamente especifica ya que se demostró también por doble híbrido que STK no interactúa con una E3 ligasa de Arabidopsis, altamente similar a CRFE3-1, así como tampoco CRFE3-1 interactúa con el dominio STK de un RLK de lechuga similar a RXam1. La identificación de CRFE3-1 sugiere que mecanismos de degradación proteica son importantes para regular la actividad de RXam1.

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Keywords

Xanthomonas axonopodis pv. manihotis (Xam), Xanthomonas axonopodis pv, QH301-705.5, interaction, interacción, inmunidad vegetal, yeast Two-hybrid, doble híbrido, Bacteriosis vascular, plant immunity, Biology (General), Bacterial blight, manihotis (Xam)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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gold