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Rapid purification of human complement receptor type 1 (CD35, CR1)
T Seya1, M Matsumoto, M Hatanaka
1Department of Immunology, Center for Adult Diseases Osaka, Japan.
Journal of Biochemical and Biophysical Methods
|May 14, 1996
Summary
Researchers developed a fast method to purify complement receptor type 1 (CR1, CD35). This technique achieves high purity and recovery, yielding CR1 with significant cofactor activity for factor I, beneficial for studying disease-related variants.
Area of Science:
- Immunology
- Protein Biochemistry
Background:
- Complement receptor type 1 (CR1, CD35) plays a crucial role in immune regulation.
- Efficient purification of CR1 is essential for studying its function, especially in disease states.
Purpose of the Study:
- To establish a rapid and efficient purification procedure for human erythrocyte CR1.
- To ensure the recovered CR1 retains its biological cofactor activity.
Main Methods:
- Solubilization of human erythrocyte stromata.
- Purification using a Red-Sepharose column followed by immunoaffinity chromatography with anti-CR1 (31R) antibody.
Main Results:
- Achieved >90% purity and >50% recovery of CR1.
- The purified CR1 demonstrated sufficient cofactor activity for factor I.
- The method effectively isolates CR1, including rare variants and soluble forms.
Conclusions:
- The developed method is rapid, efficient, and yields high-purity CR1.
- This technique facilitates the study of CR1, particularly its disease-associated variants and soluble forms.