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Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
Published on: May 4, 2018
Una sintetasa lantibiótica diseñada que no requiere un péptido líder en su sustrato
Trent J Oman1, Patrick J Knerr, Noah A Bindman
1Howard Hughes Medical Institute and Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA.
Journal of the American Chemical Society
|April 7, 2012
Resumen
Los investigadores desarrollaron un método para modificar péptidos sin necesidad de un péptido líder. Esta técnica mejora la bioingeniería de péptidos modificados, incluidos los nuevos análogos de la laticina 481 con aminoácidos no proteinogénicos.
Área de la Ciencia:
- La bioquímica es la bioquímica.
- Productos naturales Química Productos naturales Química
- Biología sintética Biología sintética.
Sus antecedentes:
- Los péptidos sintetizados ribosomalmente y los modificados post-traducionalmente son una clase creciente de productos naturales.
- La biosíntesis generalmente implica la modificación de un péptido núcleo guiado por un péptido líder N-terminal.
- Los péptidos Leader facilitan la actividad enzimática, pero requieren su eliminación, lo que complica la bioingeniería.
Objetivo del estudio:
- Desarrollar una nueva estrategia de bioingeniería para péptidos modificados.
- Para superar las limitaciones asociadas con los péptidos líderes en la biosíntesis de péptidos.
- Para crear análogos mejorados de la laticina 481 utilizando aminoácidos no proteinogénicos.
Principales métodos:
- Fusión del péptido líder de la laticina 481 con su enzima biosintética, LctM.
- Permitir que LctM modifique los péptidos centrales que carecen de una secuencia líder.
- Utilizando este método para la síntesis de nuevos análogos de péptidos.
Principales resultados:
- Demostró que el constructo de enzima-péptido líder fusionado puede actuar sobre péptidos núcleo sin líder.
- Se han preparado con éxito análogos de la laticina 481 que contienen aminoácidos no proteígenos.
- Estableció un nuevo enfoque para la bioingeniería de péptidos.
Conclusiones:
- La metodología desarrollada simplifica la bioingeniería de péptidos modificados.
- Este enfoque facilita la producción de nuevas estructuras de péptidos con propiedades personalizadas.
- Abre caminos para el descubrimiento y la producción de nuevos productos naturales y terapéuticos basados en péptidos.
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