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In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
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Traducir el Código Físico de la Vida

Benjamin D Knapp1, Kerwyn Casey Huang2

  • 1Biophysics Program, Stanford University, Stanford, CA 94305, USA.

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|July 16, 2018
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Resumen
Este resumen es generado por máquina.

El estudio revela cómo el control de la concentración de ribosomas impacta en los entornos celulares. Esta regulación limita la difusión de partículas e influye en la separación de fases en las células eucariotas.

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Área de la Ciencia:

  • Biología celular
  • La biofísica

Sus antecedentes:

  • El citoplasma es un entorno celular abarrotado y complejo.
  • La regulación de las propiedades físicas del citoplasma es crucial para la función celular.
  • El papel de componentes específicos en el control de estas propiedades es un área activa de investigación.

Objetivo del estudio:

  • Investigar cómo la concentración de ribosomas afecta las propiedades físicas del citoplasma.
  • Comprender el papel de la señalización mTORC1 en la regulación de la aglomeración y la difusión citoplasmáticas.
  • Examinar el impacto de la concentración de ribosomas en la separación de fases dentro de las células eucariotas.

Principales métodos:

  • Utilizó enfoques genéticos y bioquímicos para manipular la concentración de ribosomas.
  • Se han empleado técnicas biofísicas para medir la difusión de partículas en el citoplasma.
  • Fenómenos de separación de fase investigados bajo condiciones celulares variables.

Principales resultados:

  • Se ha demostrado que el control de la concentración de ribosomas mediado por mTORC1 limita la difusión de partículas citoplasmáticas grandes.
  • Se demostró que la concentración de ribosomas influye directamente en la aparición y las características de la separación de fase.
  • Se estableció una relación entre la densidad de los ribosomas y el estado físico general del citoplasma.

Conclusiones:

  • La concentración de ribosomas es un determinante clave de las propiedades físicas del citoplasma.
  • La señalización de mTORC1 juega un papel crítico en la regulación de la difusión citoplasmática y la separación de fases.
  • Estos hallazgos proporcionan nuevos conocimientos sobre la organización y regulación del citoplasma eucariota.