Thermostable Bacterial Collagenolytic Proteases: A Review

Area of Science:

• Biochemistry
• Enzymology
• Microbiology

Background:

• Collagenolytic proteases are vital industrial enzymes.
• Mesophilic collagenases are limited by poor thermostability in degrading collagen-rich wastes at high temperatures.
• Bacterial collagenolytic proteases belong to diverse proteinase families.

Purpose of the Study:

• To review and summarize research on thermostable and mesophilic collagenolytic proteases.
• To explore the functional roles of C-terminal domains in collagenolytic proteases.
• To analyze cleavage specificity and discuss thermostable collagenolytic protease TSS.

Main Methods:

• Literature review and summarization of existing research.
• Classification and nomenclature of collagenolytic proteases.
• Analysis of C-terminal domain functions and protease cleavage specificities.

Main Results:

• Thermostable collagenolytic proteases function efficiently at high temperatures, increasing degradation rates.
• C-terminal domains (e.g., collagen-binding, β-jelly roll) enhance collagen degradation via binding or swelling.
• TSS, a thermostable subtilisin-like serine collagenolytic protease, shows high activity at 60°C.

Conclusions:

• Thermostable bacterial collagenolytic proteases are superior for high-temperature applications.
• C-terminal domains are crucial for the collagen-binding and -swelling activities of collagenases.
• Further characterization of thermostable collagenolytic proteases like TSS is essential for industrial applications.