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Genome-wide Surveillance of Transcription Errors in Eukaryotic Organisms
Published on: September 13, 2018
Cuando el mensaje sale mal: mutaciones que producen enfermedades que influyen en el contenido y el rendimiento del
1Howard Hughes Medical Institute, Institute of Genetic Medicine, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Baltimore, MD 21205, USA.
Cell
|November 24, 2001
Resumen
Las mutaciones causantes de enfermedades a menudo afectan a los genes codificadores de proteínas. Sin embargo, algunas enfermedades genéticas surgen de mutaciones que afectan el metabolismo del ARN mensajero (ARNm), afectando su procesamiento, exportación, estabilidad y traducción.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Genética La genética.
- La bioquímica es la bioquímica.
Sus antecedentes:
- Las mutaciones causantes de enfermedades suelen ocurrir en secuencias codificadoras de proteínas, alterando directamente la estructura y la función de las proteínas.
- Un número significativo de trastornos genéticos son el resultado de alteraciones en el metabolismo del ARNm, un proceso celular crítico.
Objetivo del estudio:
- Para resaltar el papel del metabolismo del ARNm en la etiología de la enfermedad.
- Ampliar la comprensión de las mutaciones genéticas más allá de las regiones codificadoras de proteínas.
Principales métodos:
- Revisión de la literatura existente sobre mutaciones genéticas y el metabolismo del ARNm.
- Análisis de estudios de casos que vinculan defectos en el procesamiento, la exportación, la estabilidad o el control traslacional del ARNm con enfermedades.
Principales resultados:
- Mecanismos de enfermedad identificados que implican mutaciones en regiones no codificantes que afectan el procesamiento del ARNm.
- Enlaces demostrados entre mutaciones que afectan la exportación de ARNm y trastornos genéticos específicos.
- Destacó el papel de la estabilidad del ARNm y el control traslacional en la patogénesis de la enfermedad.
Conclusiones:
- Las mutaciones que influyen en el metabolismo del ARNm representan una causa significativa, pero a menudo pasada por alto, de enfermedades genéticas.
- Comprender estos mecanismos es crucial para el diagnóstico preciso y las posibles estrategias terapéuticas.
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Overview
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Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
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Overview
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Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
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Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
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Mismatch Repair
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