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Cathepsin C from bovine spleen

Type X, lyophilized powder, ≥5 units/mg protein

Dipeptidyl aminopeptidase, Dipeptidyl peptidase I
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:


Type X

Quality Level


lyophilized powder

specific activity

≥5 units/mg protein


Protein, ≥25% biuret

shipped in

dry ice

storage temp.


Related Categories


Cathepsin C has been used in a study that demonstrated the potential of a proteomics approach to identify novel proteins expressed by extravillous trophoblast and to uncover the mechanisms leading to disease states in pregnancy. Cathepsin C has also been used in a study to evaluate biodegradable thermogels.
The enzyme from Sigma has been used in the activation of granzyme k (Gzmk) precursor from E. coli. Granzymes are granule-stored lymphocyte serine proteases that are implicated in T- and natural killer cell-mediated cytotoxic defense reactions.


10, 25, 100 units in glass bottle

Biochem/physiol Actions

Cathespin C is a dipeptidyl aminopeptidase that can sequentially remove dipeptides from a peptide chain with an unsubstituted N-terminus. The enzyme exhibits a preference for glycine and proline as N-terminal aminoacids. Substrates that have an N-terminal lysyl or arginyl residue, or a penultimate proryl residue are not targeted by this enzyme. The endopeptidase activity requires the presence of halide ions and sulfydryl activators.


Unstable. Keep frozen.

Unit Definition

One unit will produce 1 μmole of Gly-Phe-NHOH from Gly-Phe-NH2 and hydroxylamine per min at pH 6.8 at 37 °C using DL-phenylalanine hydroxamic acid as the standard. In addition to its hydrolytic properties, cathepsin C catalyzes the polymerization of dipeptide amides.

Physical form

Lyophilized from a 1 M sodium chloride solution.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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