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Isolation of rat transferrin using CNBr-activated sepharose 4B
Journal of Clinical Chemistry and Clinical Biochemistry. Zeitschrift Fur Klinische Chemie Und Klinische Biochemie
|October 1, 1976
Summary
Researchers isolated rat serum transferrin using affinity chromatography. Isoelectric focusing revealed two fractions with similar biological activity but differing isoelectric points and sialic acid content.
Area of Science:
- Biochemistry
- Proteomics
Background:
- Transferrin is a key serum protein involved in iron transport.
- Understanding transferrin heterogeneity is crucial for biological and clinical studies.
Purpose of the Study:
- To describe the isolation of rat serum transferrin.
- To investigate the heterogeneity of isolated transferrin.
Main Methods:
- Affinity chromatography utilizing CNBr-activated Sepharose 4 B for transferrin isolation.
- Isoelectric focusing for subfractionation of purified transferrin.
Main Results:
- Successful isolation of transferrin from rat serum.
- Identification of two transferrin subfractions with distinct isoelectric points (pI 6.0 and 5.8).
- Differences in sialic acid content were observed between the two transferrin fractions.
Conclusions:
- Rat serum transferrin can be effectively isolated using affinity chromatography.
- Isoelectric focusing demonstrates the presence of at least two distinct transferrin forms in rat serum.
- These findings highlight transferrin heterogeneity influenced by sialic acid content.