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Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
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Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
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After folding, the ER assesses the quality of secretory and membrane proteins. The correctly folded proteins are cleared by the calnexin cycle for transport to their final destination, while misfolded proteins are held back in the ER lumen. The ER chaperones attempt to unfold and refold the misfolded proteins but sometimes fail to achieve the correct native conformation. Such terminally misfolded proteins are then exported to the cytosol by ER-associated degradation or ERAD pathway for...
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Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration
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SnapShot: Las proteínas que interactúan con FMRP.

Emanuela Pasciuto1, Claudia Bagni2

  • 1VIB Center for the Biology of Disease, 3000 Leuven, Belgium; Center for Human Genetics and Leuven Institute for Neurodegenerative Diseases (LIND), KU Leuven, 3000 Leuven, Belgium.

Cell
|September 27, 2014
PubMed
Resumen
Este resumen es generado por máquina.

El síndrome del X frágil, una causa común de discapacidad intelectual hereditaria y autismo, es el resultado de problemas con la proteína de retraso mental del X frágil (FMRP). Este estudio explora los socios de interacción de FMRP y sus roles en las vías celulares.

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Área de la Ciencia:

  • La neurogenética es la neurogenética.
  • Biología Molecular Biología Molecular
  • Neurociencia del desarrollo neurológico.

Sus antecedentes:

  • El síndrome del X frágil es una de las principales causas genéticas de discapacidad intelectual y trastorno del espectro autista.
  • La frágil proteína X de retraso mental (FMRP, por sus siglas en inglés) es fundamental para la patogénesis de esta condición.
  • Comprender las funciones moleculares de FMRP es crucial para desarrollar estrategias terapéuticas.

Objetivo del estudio:

  • Proporcionar una visión general completa de los socios de interacción proteica conocidos de FMRP.
  • Para aclarar las vías celulares y los procesos biológicos regulados por FMRP.
  • Para resaltar la importancia de las interacciones de FMRP en el contexto del síndrome de X frágil.

Principales métodos:

  • Revisión de la literatura y minería de datos de las bases de datos de interacción proteína-proteína.
  • Análisis bioinformático del interactoma FMRP.
  • Análisis de enriquecimiento funcional de los socios de interacción identificados.

Principales resultados:

  • Identificación de un conjunto diverso de proteínas que interactúan con FMRP.
  • Categoría de estos socios en las vías celulares clave, incluido el metabolismo del ARN, la función sináptica y la transducción de señales.
  • Destacando el papel multifacético de FMRP en el desarrollo y la función neuronal.

Conclusiones:

  • FMRP interactúa con una amplia gama de proteínas involucradas en procesos celulares críticos.
  • Estas interacciones subrayan los complejos mecanismos moleculares subyacentes al síndrome de X frágil.
  • Dirigirse a las vías mediadas por FMRP puede ofrecer posibles vías terapéuticas para la discapacidad intelectual y el autismo.