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RNA Stability

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...

Protein and Protein Structure

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...

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Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
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Sedimentation Equilibrium of a Small Oligomer-forming Membrane Protein: Effect of Histidine Protonation on Pentameric Stability

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Published on: April 2, 2015

Dirigir la estabilidad de las proteínas con una molécula pequeña.

Michael A Lampson¹, Tarun M Kapoor

¹Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY 10021, USA.

|September 9, 2006

Resumen

Los investigadores desarrollaron un nuevo método para controlar la estabilidad de las proteínas utilizando una etiqueta genéticamente codificada y una pequeña molécula para la regulación temporal. Este enfoque ofrece un control preciso sobre la función de las proteínas para estudios biológicos.

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Área de la Ciencia:

La bioquímica es la bioquímica.
Biología Molecular Biología Molecular
Biología Química Biología química.

Sus antecedentes:

Se establecen métodos genéticos y de pequeñas moléculas para perturbar la función de las proteínas.
El control de la estabilidad de las proteínas ofrece una estrategia alternativa para los estudios funcionales.

Objetivo del estudio:

Introducir una nueva estrategia para regular la estabilidad de las proteínas objetivo.
Para lograr el control temporal sobre la función de las proteínas utilizando pequeñas moléculas.

Principales métodos:

Empleando una etiqueta genéticamente codificada para la especificidad de la proteína diana.
Utilizando una pequeña molécula para impartir control temporal sobre la estabilidad de las proteínas.

Principales resultados:

Demostró un método para dirigirse específicamente y alterar la estabilidad de las proteínas.
Demostró la capacidad de controlar la función de las proteínas a lo largo del tiempo a través de la intervención de pequeñas moléculas.

Conclusiones:

La estrategia descrita proporciona una poderosa herramienta para diseccionar la función de las proteínas.
Este enfoque ofrece nuevas posibilidades para el estudio de procesos biológicos dinámicos.