Video Experimental Relacionado
Updated: Jul 25, 2026
05:58
Detecting and Characterizing Protein Self-Assembly In Vivo by Flow Cytometry
Published on: July 17, 2019
El autoensamblaje supramolecular de los tubos macroscópicos
Deyue Yan1, Yongfeng Zhou, Jian Hou
1College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, People's Republic of China. dyyan@sjtu.edu.cn
Science (New York, N.Y.)
|January 6, 2004
Resumen
El autoensamblaje macroscópico de copolímeros hiperbranqueados anfifílicos en acetona produce grandes tubos de paredes múltiples. Estas estructuras exhiben dominios hidrófilos únicos y alternados dentro de sus robustas paredes.
Área de la Ciencia:
- Química de Polímeros La Química de Polímeros es la química de los polímeros.
- Ciencia de los materiales Ciencia de los materiales.
- Nanotecnología La nanotecnología es la nanotecnología.
Sus antecedentes:
- Los copolímeros anfifílicos poseen propiedades únicas para el autoensamblaje.
- El control del autoensamblaje macroscópico es crucial para los materiales avanzados.
- Las arquitecturas hiper ramificadas ofrecen distintas ventajas estructurales.
Objetivo del estudio:
- Para investigar el autoensamblaje molecular macroscópico de un copolímero hiperbranqueado anfifílico.
- Caracterizar las resultantes estructuras autoensambladas y su morfología.
Principales métodos:
- Autoensamblaje a base de solución en acetona.
- Caracterización de las estructuras macroscópicas (escala de milímetro a centímetro).
- Análisis de la estructura de la pared utilizando microscopía y otras técnicas.
Principales resultados:
- Generación exitosa de tubos de paredes múltiples con diámetros milimétricos y longitudes de centímetros.
- Las paredes de los tubos tienen aproximadamente 400 nanómetros de espesor.
- Estructura de lámina no homogénea dentro de las paredes, alternando entre dominios hidrofílicos ordenados y amorfos.
Conclusiones:
- Los copolímeros hiperbranqueados anfifílicos pueden someterse a un autoensamblaje macroscópico para formar complejas arquitecturas tubulares.
- La inhomogénea estructura de lámina observada ofrece potencial para propiedades de materiales a medida.
- Este trabajo demuestra una vía para crear materiales estructurados a gran escala a partir de bloques de construcción moleculares.
Videos de Conceptos Relacionados
02:41Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
01:18Assembly of Cytoskeletal Filaments
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
01:41The Supercomplexes in the Crista Membrane
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
01:32Assembly of Complex Microtubule Structures
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
02:41Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
01:30Assembly of Signaling Complexes
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...