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Updated: Aug 5, 2026

An In-vitro Preparation of Isolated Enteric Neurons and Glia from the Myenteric Plexus of the Adult Mouse
Published on: August 7, 2013
[Proteases of the large intestine]
Aminopeptidases and dipeptidases are active in the large intestine of dogs and humans. A specific dipeptidase, an intrinsic membrane protein, functions independently of peptide C-terminal configuration.
Area of Science:
- Gastroenterology and Digestive Physiology
- Enzymology
- Molecular Biology
Background:
- The large intestine harbors diverse enzymatic activities crucial for nutrient processing.
- Understanding the specific peptidases involved is key to comprehending digestive functions.
Purpose of the Study:
- To investigate the activity and characteristics of aminopeptidases and dipeptidases in the canine and human large intestine.
- To identify and characterize a specific dipeptidase with unique properties.
Main Methods:
- Enzyme assays were performed on tissue samples from the large intestine of dogs and humans.
- Biochemical characterization of identified peptidases, including substrate specificity and localization.
Main Results:
- Significant activity of various aminopeptidases and dipeptidases was detected in the large intestine.
- A novel dipeptidase was identified, exhibiting specificity independent of the peptide's C-terminal end.
- This dipeptidase was confirmed to be an intrinsic membrane protein.
Conclusions:
- The large intestine possesses robust peptidase activity, contributing to digestive processes.
- The identified membrane-bound dipeptidase represents a distinct enzymatic entity with potential physiological roles.
- Further research is warranted to elucidate the precise physiological significance of these enzymes in intestinal function.
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