Abstract
A mannose/glucose specific lectin have been isolated and purified from mulberry seeds by affinity chromatography on ConA Sepharose. The lectin is monomer in nature as judged by SDS-PAGE and its MW was estimated to be 22,000. The lectin is glycoprotein with neutral sugar content of 28.57%, and mannose and glucose were identified as carbohydrate. The lectin agglutinated rat red blood cells and in a hapten inhibition test, D-mannose and D-glucose was found to be inhibitor. The lectin also exhibited cytotoxic effect in brine shrimp lethality bioassay. The N-terminal sequences of the lectin upto 45-residues except the positions of 21, 39, 42 and 44 were identified. Sequence homology of the lectin is also discussed.
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Abbreviations
- Con A:
-
Concanavalin A
- SDS-PAGE:
-
Sodium dodecyl sulfate polyacrylamide gel electrophoresis
- MW:
-
Molecular weight
- DEAE:
-
diethylaminoethyl
- CM:
-
Carboxy methyl
- BSA:
-
Bovine serum albumin
- TLC:
-
Thin layer chromatography
- ML:
-
Mulberry lectin
- A. int.:
-
Artocarpus integrifolia
- C. cren.:
-
Castanea crenata
- O. sat.:
-
Oryza sative.
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Absar, N., Yeasmin, T., Raza, M.S. et al. Single Step Purification, Characterization and N-Terminal Sequences of a Mannose Specific Lectin from Mulberry Seeds. Protein J 24, 369–377 (2005). https://doi.org/10.1007/s10930-005-7590-6
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DOI: https://doi.org/10.1007/s10930-005-7590-6