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Summary
Researchers developed a method to isolate human trypsin using a novel affinity adsorbent. This technique rapidly purifies trypsin, yielding a highly pure standard for developing specific radioimmunoassays.
Area of Science:
- Biochemistry
- Protein Chemistry
- Analytical Chemistry
Background:
- Human trypsin is a key enzyme in pancreatic function.
- Accurate quantification of human trypsin is essential for diagnostic assays.
- Previous methods for trypsin isolation may lack specificity or efficiency.
Purpose of the Study:
- To develop a highly selective affinity adsorbent for isolating human trypsin.
- To obtain pure human trypsin suitable for use as a standard.
- To facilitate the development of a specific radioimmunoassay for human trypsin.
Main Methods:
- Coupling of bovine pancreatic trypsin inhibitor (Kunitz) to CNBr-activated Sepharose to create an affinity adsorbent.
- Affinity chromatography for the isolation of trypsin from activated human pancreatic extract.
- Assessment of trypsin purity and chymotryptic activity.
Main Results:
- A highly selective affinity adsorbent for human trypsin was successfully prepared.
- Rapid isolation of human trypsin was achieved from pancreatic extracts.
- The isolated trypsin was free of chymotryptic activity and of high purity.
Conclusions:
- The developed affinity adsorbent is effective for purifying human trypsin.
- The purified human trypsin serves as a reliable standard for radioimmunoassay development.
- This method enables precise measurement of human trypsin levels.