Explanation of Chymotrypsinogen

Item name:Chymotrypsinogen

Source:Bovine pancreas
Storage:Sealed, Dark, at temperature 2-8℃
The pre-cursor of Chymotrpsin with 25,000 Dalton molecular weight. Chymotrypsinogen belongs to serine protease. It is purified by re-crystallization, and showing one lane in electrophoresis. And chymotrypsinogen is a white or almose white lyophilized powder. chymotrypsinogen is synthesized in the pancreas, as are several other zymogens and digestive enzymes. Indeed, the pancreas is one of the most active organs in synthesizing and secreting proteins.
Chymotrypsinogen is a precursor (zymogen) of the digestive enzyme chymotrypsin.
This molecule is inactive and must be cleaved by trypsin, and then by other chymotrypsin molecules, before it can reach its full activity. Its function is to convert proteins to smaller peptides. The active site of chymotrypsinogen is covered by a 6-amino-acid-long mask. It is only when this mask is removed - when the chymotrypsinogen molecule enters the lumen of the intestine and comes into contact with trypsin molecules - that the enzyme becomes active. This is a very useful safety feature for a protein-digesting enzyme. If chymotrypsinogen were not inactivated in this way, it would digest the pancreas, where it is produced.

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