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Rapid isolation of human kininogens
D A Johnson1, G Salvesen, M A Brown
1Biochemistry Department, Strangeways Research Laboratory, Cambridge, U.K.
Thrombosis Research
|October 15, 1987
Summary
This study presents a fast, two-step method to isolate both high molecular weight (H-) and low molecular weight (L-) plasma kininogens. The novel technique utilizes affinity and anion exchange chromatography for efficient purification from plasma.
Area of Science:
- Biochemistry
- Proteomics
- Chromatography
Background:
- Plasma kininogens are precursors in the kinin- Kallikrein system.
- Existing methods for kininogen isolation are often time-consuming and complex.
- Separating high molecular weight (H-) and low molecular weight (L-) kininogens presents a challenge.
Purpose of the Study:
- To develop a rapid and efficient method for isolating both H- and L-kininogens from human plasma.
- To establish a streamlined procedure for kininogen purification suitable for further research.
Main Methods:
- A two-step isolation procedure was developed.
- Affinity chromatography using carboxymethyl-papain-Sepharose was employed.
- High-resolution anion exchange chromatography was utilized for purification.
Main Results:
- Successful isolation of both H- and L-kininogens from a single plasma sample.
- The described method is rapid and efficient.
- The procedure yields purified kininogen fractions.
Conclusions:
- A novel, rapid, two-step protocol effectively isolates H- and L-plasma kininogens.
- The combination of affinity and anion exchange chromatography offers a robust purification strategy.
- This method facilitates further studies on kininogen function and pathways.