Artificial intelligent assistant

cathepsin

cathepsin Biochem.
  (kəˈθɛpsɪn)
  [ad. G. kathepsin (Willstätter & Bamann 1929, in Zeitschr. f. physiol. Chem. CLXXX. 130), f. Gr. καθέψ-ειν to boil down (ἕψειν to boil) + -in1.]
  Any of various proteolytic enzymes, present in most animal tissues, which aid in autolysis of cells after death or in diseased cells.

1929 Chem. Abstr. 1653 The enzymes of leucocytes... For the proteinase which is active at slightly acid reaction the name cathepsin is proposed. 1963 Lancet 19 Jan. 153/1 In..the concentration of enzymes within the diseased muscle-cell..the acid phosphatases and cathepsins, both acid and alkaline, were increased.

Oxford English Dictionary

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