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Crecimiento dinámico y biomimético fototriggado de autoagregados clorosómicos
Shogo Matsubara1, Hitoshi Tamiaki1
1Graduate School of Life Sciences , Ritsumeikan University , Kusatsu , Shiga 525-8577 , Japan.
Journal of the American Chemical Society
|January 10, 2019
Resumen
Los investigadores desarrollaron un sistema fotoinducido para la formación biomimética de agregados de clorofila (clorosomas). Los derivados inertes de la clorofila se convierten en monómeros activos tras la irradiación UV, que se ensamblan espontáneamente en estructuras similares a las fibras, imitando los procesos naturales.
Área de la Ciencia:
- Química supramolecular
- Sistemas biomiméticos
- Investigación de la fotosíntesis
Sus antecedentes:
- Las polimerizaciones supramoleculares imitan el autoensamblaje natural, pero es difícil lograr una formación espontánea y gradual a partir de monómeros.
- Los clorosomas, las antenas recolectoras de luz en las bacterias fotosintéticas, son estructuras autoensambladas complejas.
Objetivo del estudio:
- Desarrollar un sistema general de polimerización supramolecular inducida por la luz.
- Para formar biomiméticamente agregados de clorofila (clorosomas) a partir de precursores inertes.
- Para aclarar el proceso de formación de los agregados clorosómicos naturales.
Principales métodos:
- Utilizó la irradiación UV de derivados de clorofila inertes.
- Desprotección inducida para generar especies monoméricas activas.
- Se ha observado un autoensamblaje espontáneo en agregados similares a las fibras.
Principales resultados:
- Se estableció un nuevo sistema de polimerización supramolecular fotoinducida.
- Los monómeros activos de clorofila se generaron in situ a través de la desprotección desencadenada por los rayos UV.
- Los autoagregados clorosómicos similares a las fibras se formaron espontáneamente, imitando el crecimiento natural.
Conclusiones:
- El sistema desarrollado proporciona un enfoque biomimético para la formación de agregados clorosómicos.
- Este método ofrece información sobre el ensamblaje dinámico de los clorosomas naturales.
- El sistema tiene potencial para construir otras estructuras supramoleculares complejas.
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