Skip to main content
proteinase

proteinase

1 7.2
A substance in living things that breaks proteins into smaller parts
  • noun
  • /ˈproʊtiˌneɪs/
  • Specialized
translation icon : proteasa
  • During the experiment, they used proteinase K to facilitate the lysis of the cells.
  • proteinase inhibitors
  • proteinase-activated receptors

Examples

  • Inhibition of the virally produced protease known as "HIV proteinase" provides another therapeutic category in which a drug has been approved for the treatment of HIV infection.

    Academic text (2000)
  • A1-PI and A2-M are the two important proteinase inhibitors present in plasma.

    Academic text (2007)
  • The samples were then treated with a proteinase K buffer for lysis.

    Academic text (2014)
  • A major component released from human neutrophil granules during the process of phagocytosis is a proteinase referred to as human neutrophil elastase.

    Academic text (2007)
  • Apart from the main drug groups, consisting of nucleoside analogues, proteinase inhibitors, and reverse-transcriptase inhibitors, many new compounds are under development.

    Academic text (2000)
  • A 1-PI is the chief proteinase inhibitor present in the highest amount inhibiting the serine proteinases elastase and trypsin.

    Academic text (2007)
  • a1-PI is an important plasma proteinase inhibitor (52 kDa) and is synthesized by hepatocytes and macrophages.

    Academic text (2007)
  • Immunoprecipitates were then incubated with proteinase K (Roche), followed by alcohol extraction, precipitation, and suspension in 30 ml TE buffer.

    Academic text (2017)
  • The slides were treated with proteinase K (50-200 mg/mL, Invitrogen, Carlsbad, CA, USA), washed, and dehydrated with ethanol.

    Academic text (2003)
  • The scientist added proteinase to the samples to break down the proteins into smaller peptides.

Synonyms

protease
vsproteinase
  • Specialized
7 7.7

An enzyme that breaks proteins into smaller pieces

is used here as the general term rather than this short form
proteolytic enzyme
vsproteinase
  • Specialized
1 4.4

A substance that breaks proteins into smaller parts living things can use

is the preferred scientific name for the same enzymatic action
secretase
vsproteinase
  • Specialized
1 8.8

An enzyme that cuts proteins and helps form clumps in the brain linked to Alzheimer's

is a specialized group focused on specific targets, not general protein breakdown
peptidase
vsproteinase
  • Specialized
8.8

An enzyme that breaks proteins into smaller pieces called peptides and amino acids

is broader, naming enzymes that cut peptide bonds rather than specific end removal
aminopeptidase
vsproteinase
  • Specialized
8.9

A substance that helps break down proteins by removing amino acids from their start

removes terminal residues rather than cleaving internal peptide bonds
carboxypeptidase
vsproteinase
  • Specialized
9.9

An enzyme that removes amino acids from the end of a protein chain

acts on the opposite chain end rather than cutting internal peptide links

Surface Forms

proteinase singular
proteinases plural

Morphology

proteinase = protein (semi-transparent) = protein + ase

The components 'protein' + '-ase' clearly indicate an enzyme acting on proteins, but '-ase' is a specialized scientific suffix that may be unfamiliar to average B1 learners.

Etymology

Proteinase comes from protein, the important molecules in food and the body, and the ending -ase, which we add to name enzymes like lactase and lipase. So, a proteinase is an enzyme that 'breaks down' proteins into smaller pieces.