Trypsinogen
Trypsinogen (pronounced: trip-sin-o-gen) is a substance that is secreted by the pancreas and converted into trypsin in the small intestine. It is a type of proenzyme or zymogen, which are inactive precursors to enzymes.
Etymology
The term "trypsinogen" is derived from the Greek words "trypsin" meaning "to rub" and "gen" meaning "that which produces". The term was first used in the late 19th century to describe the inactive precursor to the enzyme trypsin.
Function
Trypsinogen is secreted by the acinar cells of the pancreas and transported to the small intestine. Here, it is converted into trypsin by the enzyme enterokinase (also known as enteropeptidase), which is secreted by the cells lining the small intestine. Trypsin then aids in the digestion of proteins by breaking them down into smaller peptides.
Related Terms
- Trypsin: The active form of trypsinogen, which aids in protein digestion.
- Proenzyme or Zymogen: An inactive precursor to an enzyme.
- Acinar cells: Cells in the pancreas that secrete trypsinogen.
- Enterokinase or Enteropeptidase: An enzyme that converts trypsinogen into trypsin.
See Also
External links
- Medical encyclopedia article on Trypsinogen
- Wikipedia's article - Trypsinogen
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