Jove
Visualize
Contáctanos

Videos de Conceptos Relacionados

Multi-pass Transmembrane Proteins and β-barrels01:09

Multi-pass Transmembrane Proteins and β-barrels

In multi-pass transmembrane proteins, the polypeptide chain crosses the membrane more than once. The transmembrane polypeptide chain either forms an α-helix or β-strand structure. α-Helix containing multi-pass transmembrane proteins are ubiquitous, whereas β-strand containing ones are mainly found in gram-negative bacteria, mitochondria, and chloroplasts.
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as G-protein-linked receptors (GPCRs) and...
Mechanisms of Membrane Domain Formation00:59

Mechanisms of Membrane Domain Formation

Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
Mechanisms of Membrane-bending01:15

Mechanisms of Membrane-bending

The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
Aquaporins01:25

Aquaporins

Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
Single-Strand DNA Binding Proteins01:03

Single-Strand DNA Binding Proteins

For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
Molecular Shapes01:18

Molecular Shapes

Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.Two regions of electron density in a diatomic...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Preclinical development of engineered biomaterial-based artificial bladder demonstrating core functions in a large-animal orthotopic model.

Materials today. Bio·2026
Same author

Data-augmented machine learning approach for determination of over-excavation criteria in earth pressure balance shield tunnel boring machine operations.

Scientific reports·2026
Same author

Differential Associations Between Religiosity and Cognition in the Korean Elderly With Alzheimer's Disease.

Psychiatry investigation·2026
Same author

Electrochemical biosensor based on cellulose nanocrystals functionalized with peptide-module probes for sensitive detection of influenza virus hemagglutinin.

Talanta·2026
Same author

Data-driven classification of Escherichia coli using protein language model ascertains O-serotype determining genes.

Scientific reports·2026
Same author

Advanced polymeric membranes for CO<sub>2</sub> separation: fundamentals, materials, and practical challenges.

Materials horizons·2026
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Video Experimental Relacionado

Updated: Jun 1, 2026

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

Las cremalleras moleculares unidimensionales de una sola dimensión.

Hyo Won Kim1, Jaehoon Jung, Mina Han

  • 1Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.

Journal of the American Chemical Society
|May 20, 2011
PubMed
Resumen

Los investigadores crearon una cremallera molecular unidimensional utilizando un derivado del azobenzeno. Este estudio revela las interacciones combinadas de enlace de hidrógeno y de van der Waals que impulsan la formación de cremalleras en una superficie de oro.

Más Videos Relacionados

A Simple, Robust, and High Throughput Single Molecule Flow Stretching Assay Implementation for Studying Transport of Molecules Along DNA
12:05

A Simple, Robust, and High Throughput Single Molecule Flow Stretching Assay Implementation for Studying Transport of Molecules Along DNA

Published on: October 1, 2017

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

Videos de Experimentos Relacionados

Last Updated: Jun 1, 2026

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

A Simple, Robust, and High Throughput Single Molecule Flow Stretching Assay Implementation for Studying Transport of Molecules Along DNA
12:05

A Simple, Robust, and High Throughput Single Molecule Flow Stretching Assay Implementation for Studying Transport of Molecules Along DNA

Published on: October 1, 2017

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

Área de la Ciencia:

  • Ciencias de la superficie Ciencias de la superficie.
  • Química supramolecular de las moléculas.
  • Ciencia de los materiales Ciencia de los materiales.

Sus antecedentes:

  • Las cremalleras moleculares son estructuras de autoensamblaje con aplicaciones potenciales en nanotecnología.
  • Comprender las fuerzas intermoleculares que gobiernan su formación es crucial para diseñar materiales avanzados.

Objetivo del estudio:

  • Para sintetizar un nuevo derivado de azobenzeno capaz de formar una cremallera molecular unidimensional.
  • Para dilucidar el mecanismo de la formación de cremalleras moleculares impulsadas por interacciones intermoleculares específicas.

Principales métodos:

  • Síntesis de un derivado de azobenzeno personalizado.
  • Caracterización de la superficie utilizando microscopía de túnel de barrido (STM) en una superficie de oro.
  • Investigación teórica utilizando cálculos de la teoría funcional de la densidad (DFT).

Principales resultados:

  • Síntesis exitosa del derivado del azobenzeno.
  • Observación de la formación de una cremallera molecular unidimensional en la superficie de Au.
  • Identificación de los enlaces de hidrógeno sinérgicos y las fuerzas de van der Waals como factores clave del autoensamblaje.

Conclusiones:

  • El derivado de azobenzeno sintetizado forma efectivamente cremalleras moleculares unidimensional.
  • El estudio proporciona información fundamental sobre el papel de las interacciones no covalentes combinadas en el autoensamblaje molecular dirigido.