[en-doh-pep-ti-deys, -deyz]
noun Biochemistry.
an enzyme that catalyzes the cleavage of a polypeptide or protein at interior positions of the amino acid chain.

1935–40; endo- + peptidase

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World English Dictionary
endopeptidase (ˌɛndəʊˈpɛptɪˌdeɪz)
Compare exopeptidase Also called: proteinase any proteolytic enzyme, such as pepsin, that splits a protein into smaller peptide fragments

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Medical Dictionary

endopeptidase en·do·pep·ti·dase (ěn'dō-pěp'tĭ-dās', -dāz')
Any of a large group of enzymes that catalyze the hydrolysis of peptide bonds in the interior of a polypeptide chain or protein molecule.

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