Endoproteinase

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Endoproteinases, or sometimes simply referred as proteinases, are enzymes that cut the polypeptide chain internally. In contrast, exopeptidases cut the polypeptide chain near the end of the chain to liberate one or a few amino acid residues. Endoproteinases and exopeptidases are two types of proteases.

Examples of endoproteinases are:
Trypsin
Pepsin
Lys-C
Asp-N
Glu-C

Examples of exopeptidases are:
MetAP (methionine aminopeptidase)


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