What is cathepsin?

Cathepsin is any intracellular protein-splitting enzyme that acts on the interior peptide bonds of a protein, causing its decomposition; cathepsins are widely distributed in animal tissues, especially the liver, kidney, and spleen.

Cathepsins are proteases found in all animals as well as other organisms. There are approximately a dozen members of this family, which are distinguished by their structure, catalytic mechanism, and which proteins they cleave. Most of the members…

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