Related Experiment Video
Updated: Dec 18, 2025
11:27
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
48.9K
Metal-Organic Framework Disintegrants: Enzyme Preparation Platforms with Boosted Activity
Hongde An1, Jie Song1, Ting Wang2
1State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300071, China.
Angewandte Chemie (International Ed. in English)
|June 11, 2020
Summary
Researchers developed novel metal-organic frameworks (MOFs) to protect enzymes and boost their activity. These MOF-enzyme composites enhance biocatalysis by releasing activators and enzymes simultaneously.
Area of Science:
- Biocatalysis and Enzyme Engineering
- Materials Science and Nanotechnology
Background:
- Enzyme stability and activity are often limited in industrial biocatalysis.
- Enzyme immobilization can enhance stability but may reduce activity.
- Metal ions are crucial activators for many enzymatic reactions.
Purpose of the Study:
- To develop a novel enzyme carrier system using metal-organic frameworks (MOFs).
- To enhance enzyme stability and activity through MOF encapsulation and controlled release.
- To investigate the mechanism of activity enhancement via MOF-mediated activator delivery.
Main Methods:
- Construction of MOFs using enzyme activators (metal ions) as building blocks.
- Encapsulation of enzymes within the MOF structure.
- Characterization of the MOF-enzyme composite and assessment of its performance in biocatalysis.
- Mechanistic studies on activator/enzyme release and ion pumping effects.
Main Results:
- MOF carriers were successfully synthesized, encapsulating enzymes and utilizing metal ions as activators.
- The MOF-enzyme composite demonstrated enhanced enzyme stability against various perturbations.
- Biocatalytic activity was significantly boosted (up to 251%) due to continuous activator supply and proximity effects.
- Simultaneous release of enzymes and activators from the MOF carrier was observed during biocatalysis.
Conclusions:
- A novel MOF-based system effectively combines enzyme immobilization and homogeneous biocatalysis.
- The MOF carrier acts as a protective shield and an 'ion pump,' continuously supplying activators to enhance enzyme performance.
- This approach offers a promising strategy for developing highly efficient and stable biocatalysts.
Related Concept Videos
02:34Enzymes
91.8K
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...
91.8K
01:13Introduction to Mechanisms of Enzyme Catalysis
10.3K
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...
10.3K
01:30Enzyme Inhibition
90.0K
Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.
90.0K