Jove
Visualize
Contáctanos
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

Videos de Conceptos Relacionados

Hess's Law03:40

Hess's Law

45.4K
There are two ways to determine the amount of heat involved in a chemical change: measure it experimentally, or calculate it from other experimentally determined enthalpy changes. Some reactions are difficult, if not impossible, to investigate and make accurate measurements for experimentally. And even when a reaction is not hard to perform or measure, it is convenient to be able to determine the heat involved in a reaction without having to perform an experiment.
45.4K
Autoxidation of Ethers to Peroxides and Hydroperoxides02:23

Autoxidation of Ethers to Peroxides and Hydroperoxides

7.9K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
7.9K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

10.6K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.6K
¹H NMR of Labile Protons: Deuterium (²H) Substitution00:48

¹H NMR of Labile Protons: Deuterium (²H) Substitution

944
This lesson illustrates the role of deuterium substitution in simplifying the NMR spectrum of compounds comprising labile protons. One method employed is the use of deuterium. Amongst the three isotopes of hydrogen, deuterium (2H) has a nucleus composed of one proton and one neutron. When the D2O solvent is added to a pure dry ethanol solution, its labile proton is substituted with deuterium.
944
Diels–Alder Reaction: Characteristics of Dienophiles01:24

Diels–Alder Reaction: Characteristics of Dienophiles

6.2K
In a Diels–Alder reaction, the diene is usually an electron-rich system and acts as a nucleophile, whereas the dienophile is electron-deficient and functions as an electrophile. Much like the diene, the nature of the dienophile significantly impacts the outcome of the reaction. 
Characteristics of Dienophiles
Generally, the best dienophiles are alkenes containing electron-withdrawing substituents such as carbonyl, nitrile, and nitro groups. The feasibility of a Diels–Alder reaction depends...
6.2K
Otto and Diesel Cycle01:27

Otto and Diesel Cycle

1.9K
An Otto engine is a four-stroke engine that uses a mixture of gasoline and air as the working fuel. The fuel is injected into the cylinder, and the piston is moved completely down so that the cylinder is at maximum volume. By moving the piston up, adiabatic compression takes place. The spark plug ignites the gasoline-air mixture, and the burning fuel adds heat to the system at a constant volume. The heated mixture expands adiabatically and gets further cooled by exhausting heat, and this cyclic...
1.9K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

pH-dependent activation of the Na<sup>+</sup>/H<sup>+</sup> antiporter NhaA and conformational dynamics of its N-terminus.

Nature communications·2026
Same author

The Conformational Switches of a Bacterial Light-Driven Sodium Pump Characterized by Time-Resolved Resonance Raman Spectroscopy.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
Same author

Characterization of Phytoene Desaturase Knockout Carotenoid-Deficient Microalgal Mutants Generated by Cas9-Ribonucleoprotein Complexes.

Physiologia plantarum·2026
Same author

Reinvestigation of Absorption Spectroscopic Thermal Dynamics of Archaerhodopsin 3 Based Voltage Sensor QuasAr1.

Bioengineering (Basel, Switzerland)·2025
Same author

Multicolor photoreactions of the red light-activated channelrhodopsin Chrimson.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Optogenetic silencing by combining a rhodopsin cyclase with an engineered cGMP-gated potassium channel.

Science advances·2025

Video Experimental Relacionado

Updated: Jul 8, 2026

Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)
07:54

Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)

Published on: September 8, 2015

Dieter Oesterhelt (1940-2022) también conocido como Oesterhelt

Peter Hegemann1, Hartmut Michel2

  • 1Institute of Biology, Humboldt-Universität zu Berlin, Berlin, Germany.

Science (New York, N.Y.)
|January 26, 2023
PubMed
Resumen

Esta investigación pone de relieve un pionero en los estudios de proteínas de membrana. El trabajo se centra en las contribuciones fundamentales a la comprensión de estas estructuras biológicas vitales.

Más Videos Relacionados

Tuning Degradation to Achieve Specific and Efficient Protein Depletion
05:11

Tuning Degradation to Achieve Specific and Efficient Protein Depletion

Published on: July 20, 2019

Enabling Real-Time Compensation in Fast Photochemical Oxidations of Proteins for the Determination of Protein Topography Changes
07:38

Enabling Real-Time Compensation in Fast Photochemical Oxidations of Proteins for the Determination of Protein Topography Changes

Published on: September 1, 2020

Videos de Experimentos Relacionados

Last Updated: Jul 8, 2026

Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)
07:54

Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)

Published on: September 8, 2015

Tuning Degradation to Achieve Specific and Efficient Protein Depletion
05:11

Tuning Degradation to Achieve Specific and Efficient Protein Depletion

Published on: July 20, 2019

Enabling Real-Time Compensation in Fast Photochemical Oxidations of Proteins for the Determination of Protein Topography Changes
07:38

Enabling Real-Time Compensation in Fast Photochemical Oxidations of Proteins for the Determination of Protein Topography Changes

Published on: September 1, 2020

Área de la Ciencia:

  • La bioquímica
  • Biología molecular
  • Biología estructural

Sus antecedentes:

  • Las proteínas de membrana son cruciales para las funciones celulares, incluido el transporte y la señalización.
  • Comprender su estructura y función es clave para numerosos procesos biológicos.
  • Las primeras investigaciones sentaron las bases para los estudios modernos de proteínas de membrana.

Objetivo del estudio:

  • Para reconocer las contribuciones pioneras a la investigación de proteínas de membrana.
  • Subrayar la importancia del trabajo fundacional en este campo.
  • Proporcionar un contexto histórico para los avances en la ciencia de las proteínas de membrana.

Principales métodos:

  • Análisis histórico de las principales publicaciones y descubrimientos.
  • Revisión biográfica de científicos influyentes en el campo.
  • Síntesis de los primeros enfoques experimentales en la investigación de proteínas de membrana.

Principales resultados:

  • Identificó avances clave en la caracterización de las proteínas de la membrana.
  • Destacó el impacto de la investigación pionera en los esfuerzos científicos posteriores.
  • Estableció los conocimientos fundamentales sobre los que se basa la investigación actual.

Conclusiones:

  • Los primeros pioneros establecieron conceptos críticos en la investigación de proteínas de membrana.
  • Su trabajo continúa influyendo en la dirección de la biología molecular y celular.
  • Reconocer esta investigación fundamental es esencial para apreciar el progreso del campo.