1. proteinase

noun. any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis.


  • caspase
  • ACE
  • angiotensin converting enzyme
  • angiotensin-converting enzyme
  • renin
  • enzyme
  • protease
  • plasminogen activator
  • urokinase
  • peptidase

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Example sentences of the word proteinase

1. Noun, singular or mass
If high purity is not required, scientists may add an enzyme called proteinase K to break down most of the proteins in the sample then use it as-is.