Enteropeptidase: Difference between revisions
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'''Enterokinase''' is a [[peptidase]] expressed by cells on the border of the [[small intestine]]. Enterokinase activates [[trypsinogen]], a [[zymogen]], to [[trypsin]], indirectly activating a number of [[pancreas|pancreatic]] digestive enzymes. |
'''Enterokinase''' is a [[peptidase]] expressed by cells on the border of the [[small intestine]]. Enterokinase activates [[trypsinogen]], a [[zymogen]], to [[trypsin]], indirectly activating a number of [[pancreas|pancreatic]] digestive enzymes. |
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Contrary to what its name suggests, enterokinase is not a [[kinase]], since it activates its substrate by cleavage and not [[phosphorylation]]. Newer texts refer to this enzyme more appropriately as ''enteropeptidase.'' |
Contrary to what its name suggests, enterokinase is not a [[kinase]], since it activates its substrate by cleavage and not [[phosphorylation]]. Newer texts refer to this enzyme more appropriately as ''[[enteropeptidase.]]'' |
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''Overview'': trypsinogen + enterokinase → trypsin + octapeptide |
''Overview'': trypsinogen + enterokinase → trypsin + octapeptide |
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Revision as of 19:29, 5 April 2006
Enterokinase is a peptidase expressed by cells on the border of the small intestine. Enterokinase activates trypsinogen, a zymogen, to trypsin, indirectly activating a number of pancreatic digestive enzymes.
Contrary to what its name suggests, enterokinase is not a kinase, since it activates its substrate by cleavage and not phosphorylation. Newer texts refer to this enzyme more appropriately as enteropeptidase.
Overview: trypsinogen + enterokinase → trypsin + octapeptide
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