Video Experimental Relacionado
Updated: May 8, 2026
11:48
Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
Published on: October 9, 2014
Sexo, agilidad y la regulación del empalme alternativo
1Department of Genetics and Developmental Biology, University of Connecticut Health Center, 263 Farmington Avenue, Farmington 06030, USA. graveley@neuron.uchc.edu
Cell
|June 28, 2002
Resumen
El empalme alternativo regula la expresión génica eucariota y la diversidad de proteínas. La investigación sobre el gen letal de Drosophila Sex reveló el factor de empalme SPF4545.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Genética La genética.
- Regulación genética Reglamento genético.
Sus antecedentes:
- El empalme alternativo es un mecanismo clave para aumentar la diversidad de proteínas en los eucariotas.
- Comprender la regulación génica es crucial para descifrar procesos biológicos complejos.
Objetivo del estudio:
- Investigar el papel del factor de empalme SPF45 en el empalme alternativo.
- Explorar la regulación del empalme alternativo en el segundo paso del proceso.
Principales métodos:
- Examen detallado del gen letal del sexo de la Drosophila.
- Análisis de las interacciones de los factores de empalme y eventos de empalme alternativos.
Principales resultados:
- Identificó el factor de empalme SPF45 como crítico para definir los sitios de exonligación.
- Demostrado que el empalme alternativo puede ser regulado en el segundo paso catalítico.
Conclusiones:
- El factor de empalme SPF45 juega un papel importante en la selección de sitios de empalme alternativos.
- La regulación de empalme alternativo involucra puntos de control más allá de la definición inicial del exón.
Videos de Conceptos Relacionados
01:32RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
01:32RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
02:41Chromatin Structure Regulates pre-mRNA Processing
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
02:18Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
01:36What is Gene Expression?
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...
02:18Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...