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Fully Autonomous Characterization and Data Collection from Crystals of Biological Macromolecules
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Imágenes cuantitativas de las macromoléculas biológicas individuales
Gavin Young1, Nikolas Hundt1, Daniel Cole1
1Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK.
Science (New York, N.Y.)
|April 28, 2018
Resumen
La microscopia de dispersión interferométrica mide con precisión la masa de una sola biomolécula en solución. Esta técnica revela las interacciones moleculares, la dinámica y las distribuciones de proteínas, lípidos y azúcares.
Área de la Ciencia:
- Bioquímica y Biofísica
- Biología estructural
- Dinámica molecular
Sus antecedentes:
- Las funciones celulares dependen de las proteínas y sus interacciones complejas.
- El análisis de la heterogeneidad estructural y dinámica de las proteínas es un desafío para los métodos actuales.
Objetivo del estudio:
- Desarrollar y aplicar una nueva técnica de microscopía para el análisis de biomoléculas individuales.
- Superar las limitaciones en la caracterización de la heterogeneidad y la dinámica molecular.
Principales métodos:
- Se utilizó la microscopía de dispersión interferométrica para cuantificar la masa de las biomoléculas individuales en solución.
- Se logra una alta precisión (2% de precisión de la masa de la secuencia), resolución (19 kilodalton) y precisión (1 kilodalton).
Principales resultados:
- Distribuciones oligoméricas resueltas en un rango dinámico alto.
- Se ha detectado la unión de pequeñas moléculas a proteínas.
- Proteínas de imagen masiva con éxito con lípidos y azúcares asociados.
Conclusiones:
- La espectrometría de masas de dispersión interferométrica permite la caracterización detallada de diversos procesos moleculares.
- Este método permite mediciones de las interacciones biomoleculares a nivel de una sola molécula.
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