Related Experiment Video
Updated: May 11, 2025
11:27
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
48.0K
Crystal Phase Transition-Driven Integration of Enzymes into 2D Metal-Organic Frameworks
Ningyi Zhong1, Rongwei He1, Wei Huang2
1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China.
ACS Applied Materials & Interfaces
|April 18, 2025
Summary
A new phase transition strategy enables enzyme encapsulation within metal-organic frameworks (MOFs), creating robust biocatalysts. This method preserves enzyme activity and enhances stability across diverse conditions.
Area of Science:
- Materials Science
- Biochemistry
- Chemical Engineering
Background:
- Enzyme encapsulation in metal-organic frameworks (MOFs) is key for robust biocatalysts.
- Interfacial interactions often limit MOF-based enzyme immobilization methods.
- A versatile strategy is needed to overcome these limitations.
Purpose of the Study:
- To develop a novel phase transition strategy for enzyme encapsulation in MOFs.
- To demonstrate the broad applicability of this method across various enzymes.
- To engineer highly active and stable MOF-encapsulated enzyme biocatalysts.
Main Methods:
- Enzyme preloading into a zinc oxide (ZnO) template via coprecipitation.
- ZnO-to-Zn-HHTP MOF crystal phase transition using ligand precursors.
- Characterization of the quasi-mesoporous hybrid Zn-HHTP MOF structure and enzyme integrity.
Main Results:
- Successful encapsulation of diverse enzymes within Zn-HHTP MOF using the phase transition strategy.
- Enhanced catalytic activity of enzyme@Zn-HHTP due to quasi-mesoporous channels compared to ZIF-8.
- Exceptional structural stability of enzyme@Zn-HHTP across pH 3-14 and protection against heat, solvents, and proteases.
Conclusions:
- The phase transition strategy offers a facile and reliable method for MOF biocatalyst synthesis.
- This approach yields active and robust enzyme-MOF composites with broad applicability.
- The engineered biocatalysts have potential to advance various fields of biocatalysis.
Related Concept Videos
02:58Crystal Field Theory - Octahedral Complexes
25.7K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
25.7K
01:13Introduction to Mechanisms of Enzyme Catalysis
7.8K
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...
7.8K