Videos de Conceptos Relacionados
02:05DNA as a Genetic Template
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
02:05DNA as a Genetic Template
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
01:44Complementary DNA
Overview
01:44Complementary DNA
Overview
03:36Genome Annotation and Assembly
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
03:01The Replisome
DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
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Materiales de ensamblaje con el ADN como guía.
Faisal A Aldaye1, Alison L Palmer, Hanadi F Sleiman
1Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A 2K6, Canada.
Science (New York, N.Y.)
|September 27, 2008
Resumen
La nanotecnología del ADN utiliza las propiedades únicas del ADN para crear patrones precisos a nanoescala. Estas nanoestructuras de ADN posicionan con precisión los componentes funcionales y sirven como plantillas para materiales avanzados y aplicaciones biológicas.
Área de la Ciencia:
- Ingeniería de biomateriales Ingeniería de biomateriales.
- Nanotecnología La nanotecnología es la nanotecnología.
- La ingeniería molecular es una ingeniería molecular.
Sus antecedentes:
- El ADN posee un reconocimiento molecular único y propiedades estructurales ideales para la creación de plantillas a nanoescala.
- La nanotecnología del ADN reutiliza el ADN, sin tener en cuenta su función biológica, para diseñar nanoestructuras.
Objetivo del estudio:
- Para explorar el potencial del ADN como una plantilla para el patronaje de materiales a nanoescala.
- Destacar la versatilidad de las nanoestructuras de ADN en el posicionamiento de componentes funcionales y permitir nuevas aplicaciones.
Principales métodos:
- Utilizando la codificación inherente y las características estructurales del ADN para diseñar y ensamblar nanoestructuras direccionables.
- Empleando estas nanoestructuras de ADN para posicionar con precisión varios elementos funcionales como proteínas y nanopartículas.
Principales resultados:
- Demostró la creación de nanoestructuras 1D, 2D y 3D utilizando el ADN como plantilla.
- Mostró el posicionamiento preciso de proteínas, nanopartículas y metales de transición dentro de patrones diseñados.
- Aplicaciones destacadas en el crecimiento de nanocables, determinación estructural de proteínas y plataformas genómicas.
Conclusiones:
- La nanotecnología del ADN ofrece una poderosa plataforma para el diseño y fabricación de materiales a nanoescala.
- El campo tiene una promesa significativa para el avance de la ciencia de los materiales y la investigación biológica a través de patrones moleculares precisos.