Applications of Cathepsin B Protein (CTSB) in Enzymology Studies
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February 9, 2026, 2:25 AM
- •Cathepsin B (CTSB) is a cysteine protease vital for intracellular protein breakdown.
- •CTSB's structure and activity are key in enzymology, including endo- and exopeptidase functions.
- •Researchers use CTSB in assays to study protease activity, inhibitor interactions, and enzyme regulation.
- •CTSB's properties make it suitable for studying pH-regulated enzyme activity and the enzyme maturation process.
Cathepsin B Protein (CTSB) is a cysteine protease enzyme crucial for breaking down proteins within cells and is widely used in enzymology research. Its dual proteolytic activity and well-defined structure, including a unique occluding loop, make it ideal for studying enzyme-substrate interactions and protease kinetics. CTSB's functionality extends to both endopeptidase and exopeptidase actions, providing insights into diverse proteolytic patterns and pH-regulated enzyme activity in lysosomes. Researchers utilize CTSB in protease activity assays, employing fluorogenic and chromogenic substrates to examine enzyme action, inhibitor interactions, and the enzyme's maturation process, furthering the understanding of protease regulation.
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