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Purification and characterization of fish surface mucin
The Italian Journal of Biochemistry
|May 1, 1987
Summary
This study isolated and characterized fish surface mucin from Pampus argenteus, identifying it as a glycoprotein with significant carbohydrate and amino acid content, and potential blood group-A activity.
Area of Science:
- Biochemistry
- Marine Biology
- Glycobiology
Background:
- Fish surface mucins play a crucial role in mucosal immunity and protection.
- Understanding the composition of fish mucins can provide insights into their biological functions.
Purpose of the Study:
- To extract, purify, and characterize the surface mucin from Pampus argenteus.
- To determine the biochemical composition and potential biological activity of the isolated mucin.
Main Methods:
- Extraction of fish surface mucin using organic solvents.
- Purification using Sephadex G-200 and DEAE-Cellulose chromatography.
- Analysis of carbohydrate, amino acid, molecular weight, and biological activity.
Main Results:
- A glycoprotein mucin with a minimal molecular weight of 6.9 x 10(5) was isolated.
- The mucin contained galactose, glucose, mannose, arabinose, N-acetyl glucosamine, N-acetyl galactosamine, sialic acid, and significant sulfate.
- The N-terminal amino acid was blocked, and blood group-A activity was detected.
Conclusions:
- Pampus argenteus surface mucin is a complex glycoprotein with a high molecular weight.
- The identified sugar and amino acid composition, along with blood group-A activity, suggests specific functional roles.