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Isolation, Partial Purification, and Characterization of Lectins from the Roots of Vigna unguiculata (L.) Walp.

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Author(s): Gilda Rivero | Reginald Camillo | Ernelea Cao | Remedios Roderos | Ronald Matias

Journal: Science Diliman
ISSN 0115-7809

Volume: 7-8;
Start page: 30;
Date: 1995;
Original page

Keywords: lectins | Vigna unguiculata | lectin subunits | molecular weight | isoelectric point | hemeagglutinating activity | sugar-binding sites

ABSTRACT
A lectin was isolated from the roots of 7-day old Vigna unguiculata (L.) Walp. seedlings using size-exclusion chromatography. The root lectin revealed two subunits in SDS-PAGE and migrated as a single protein in a pH gradient isoelectrofocusing gel electrophoresis as well as in native gel electrophoresis. The root lectin exhibited no specificity to any of the erythrocytes tested. In addition, the agglutinating activity of the root lectin was markedly increased by enzymes. The hemeagglutinating activity of the root lectin was inhibited by the sugars N-acetyl-galactosamine and methyl-a-D-glucopyranoside.
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