Video Experimental Relacionado
Updated: Mar 1, 2026
08:10
Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System
Published on: August 8, 2016
9.3K
Ingeniería molecular de la robustez y la resiliencia en redes de reacción enzimática
Albert S Y Wong1, Aleksandr A Pogodaev1, Ilia N Vialshin1
1Institute for Molecules and Materials, Radboud University Nijmegen , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
Journal of the American Chemical Society
|June 6, 2017
Resumen
Los químicos ahora pueden diseñar redes moleculares funcionales. Al controlar las velocidades de reacción, los investigadores pueden crear sistemas químicos que exhiban oscilaciones y otros comportamientos complejos, allanando el camino para el "software molecular".
Área de la Ciencia:
- La cinética química
- Química de los sistemas
- Diseño de la red molecular
Sus antecedentes:
- Los sistemas vivos utilizan redes complejas de reacción química para el control espacial y temporal de las concentraciones moleculares.
- Las redes biológicas exhiben motivos funcionales como la bistabilidad y las oscilaciones, lo que plantea un desafío para la química sintética.
- Comprender las relaciones estructura-dinámica en las redes químicas es crucial para diseñar sistemas robustos y resistentes.
Objetivo del estudio:
- Demostrar cómo las velocidades de reacción individuales influyen en la dinámica de las redes químicas.
- Identificar los parámetros clave que rigen la dinámica de las oscilaciones del ciclo límite en los sistemas químicos sintéticos.
- Permitir el diseño de motivos químicos funcionales análogos a las redes biológicas.
Principales métodos:
- Análisis de las velocidades de reacción dentro de las redes químicas.
- Investigar la dinámica que conduce a las oscilaciones del ciclo límite.
- Modelado computacional de la dinámica de las reacciones químicas.
Principales resultados:
- Se demostró que las velocidades de reacción individuales controlan la dinámica para alcanzar las oscilaciones del ciclo límite.
- Se identificaron los parámetros clave que rigen la dinámica de la red.
- Se aclararon los principios para diseñar redes químicas robustas y resistentes.
Conclusiones:
- El control de la velocidad de reacción es una estrategia viable para diseñar redes químicas funcionales.
- Este trabajo constituye una base para el desarrollo
- El software molecular
- para la química sintética.
- Los hallazgos avanzarán en la creación de sistemas químicos artificiales con comportamientos predecibles y complejos.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:07Catalytically Perfect Enzymes
5.2K
The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
Most enzymes...
Most enzymes...
5.2K
01:19Introduction to Enzyme Kinetics
35.2K
Enzyme kinetics studies the rates of biochemical reactions. Scientists monitor the reaction rates for a particular enzymatic reaction at various substrate concentrations. Additional trials with inhibitors or other molecules that affect the reaction rate may also be performed.
The experimenter can then plot the initial reaction rate or velocity (Vo) of a given trial against the substrate concentration ([S]) to obtain a graph of the reaction properties. For many enzymatic reactions involving a...
The experimenter can then plot the initial reaction rate or velocity (Vo) of a given trial against the substrate concentration ([S]) to obtain a graph of the reaction properties. For many enzymatic reactions involving a...
35.2K
01:13Introduction to Mechanisms of Enzyme Catalysis
11.1K
For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
11.1K
01:19Enzyme Kinetics
104.9K
Enzymes speed up reactions by lowering the activation energy of the reactants. The speed at which the enzyme turns reactants into products is called the rate of reaction. Several factors impact the rate of reaction, including the number of available reactants. Enzyme kinetics is the study of how an enzyme changes the rate of a reaction.
Scientists typically study enzyme kinetics with a fixed amount of enzyme in the controlled environment of a test tube. When more reactant, or substrate, is...
Scientists typically study enzyme kinetics with a fixed amount of enzyme in the controlled environment of a test tube. When more reactant, or substrate, is...
104.9K
01:23Operon Model
1.7K
The operon model represents a fundamental mechanism of gene regulation in prokaryotes, enabling coordinated expression of genes involved in related metabolic or functional pathways. Operons consist of structural genes, a promoter, and an operator, with transcription regulated by repressors, activators, and small effector molecules.Structure and Function of OperonsAn operon is a cluster of structural genes transcribed together under the control of a single promoter. The promoter region...
1.7K
02:34Enzymes
96.0K
Inside living organisms, enzymes act as catalysts for many biochemical reactions involved in cellular metabolism. The role of enzymes is to reduce the activation energies of biochemical reactions by forming complexes with its substrates. The lowering of activation energies favor an increase in the rates of biochemical reactions.
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
96.0K