Immobilized enzymes as analytical reagents.

Area of Science:

• Biochemistry
• Analytical Chemistry
• Enzyme Technology

Background:

• Immobilized enzymes are increasingly utilized as analytical reagents due to superior reusability, stability, and inhibitor resistance compared to soluble enzymes.
• Understanding the kinetic and catalytic alterations upon enzyme immobilization is crucial for optimizing analytical applications.

Purpose of the Study:

• To discuss the kinetic and catalytic effects of immobilized enzymes in analytical methods.
• To explore the application of immobilized enzymes in fluorometric and electrochemical monitoring systems.
• To present a survey of enzyme electrodes and their use in metabolite assays.

Main Methods:

• Analysis of kinetic parameters such as Michaelis constant (Km) and maximum velocity (Vmax).
• Evaluation of shifts in activity-pH profiles and temperature dependence post-immobilization.
• Review of inhibitor constants (K1) and their impact on assay sensitivity.

Main Results:

• Immobilization causes significant shifts in enzyme activity-pH profiles and temperature dependencies.
• Kinetic parameters (Km, Vmax) and inhibitor constants (K1) are altered by immobilization, affecting assay performance.
• Immobilized enzymes demonstrate effective application in various monitoring systems, including enzyme electrodes.

Conclusions:

• Immobilized enzymes provide a robust platform for sensitive and reliable analytical assays.
• The technology enables precise quantification of metabolites like BUN, glucose, and amino acids.
• Enzyme immobilization technology holds significant promise for future advancements in analytical and diagnostic fields.