Formación prebiótico de vesículas de ácidos grasos por estructuración disipativa

Autores/as

  • Karo Michaelian Department of Nuclear Physics and Applications of Radiation, Instituto de Física, UNAM. México
  • Oscar Rodríguez Posgrado en Ciencias Físicas, UNAM. México.

Resumen

Describimos la estructuración disipativa fotoquímica de los ácidos grasos a partir de agua saturada de CO y CO2 bajo el flujo de fotones en el región ultravioleta (UVC y UVB) prevalentes en la superficie de la Tierra durante el Arcaico. Se sugiere que su asociación en vesículas, y su posterior asociación con otras moléculas fundamentales de la vida, tales como ARN, ADN y carotenoides para formar las primeras protocélulas, se produjeron a través de la estructuración disipativa fotoquímica. Se postula que las primeras vesículas se formaron a partir de ácidos linolenicos conjugados (C18: 3n-3) y parináricos (C18: 4n-3) que dan lugar a vesículas estables a altas temperaturas (~ 85 ° C) y pH (6.0-6.5) en la superficie del océano Arcaico, resistentes a la floculación por sales divalentes, permeables a iones y pequeñas moléculas cargadas, pero impermeables a ADN y ARN corto y, más importante, altamente disipativas en el ultravioleta.

Palabras clave: ácidos grasos, vesículas, estructuración disipativa, origen de la vida, protocélulas.

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Publicado

2019-10-15

Cómo citar

Michaelian, K., & Rodríguez, O. (2019). Formación prebiótico de vesículas de ácidos grasos por estructuración disipativa. Revista Cubana De Química, 31(3), 354–370. Recuperado a partir de https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5031

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Vol. 31 Núm. 3 (2019)

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