vicia villosa/carbohydrate

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Isolation and characterization of lectins from Vicia villosa. Two distinct carbohydrate binding activities are present in seed extracts.

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An uncharacterized lectin from Vicia villosa seeds has been reported to bind specifically to mouse cytotoxic T lymphocytes (Kimura, A., Wigzell, H., Holmquist, G., Ersson, B., and Carlsson, P., (1979) J. Exp. Med. 149, 473-484). We have found that V. villosa seeds contain at least three lectins

Carbohydrate binding specificity of the Tn-antigen binding lectin from Vicia villosa seeds (VVLB4).

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2-Dansylamino-2-deoxy-D-galactose (GalNDns) is a useful fluorescent probe to study the interaction of non-fluorescent sugars with the B4 lectin from Vicia villosa seeds (VVLB4). Binding of the lectin to GalNDns leads to a 5.2-fold increase in Dansyl fluorescence with a concomitant 10 nm blue shift

The B4 lectin from Vicia villosa seeds interacts with N-acetylgalactosamine residues alpha-linked to serine or threonine residues in cell surface glycoproteins.

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We have examined the carbohydrate binding specificity of the B4 lectin from Vicia villosa seeds. The B4 lectin agglutinates Tn-exposed erythrocytes specifically and binds to these erythrocytes (1.4 X 10(6) sites/cell) with an association constant of 4.2 X 10(7) M-1. The concentrations of saccharides

Cancer metastasis: characterization and identification of the behavior of metastatic tumor cells and the cell adhesion molecules, including carbohydrates.

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This review focuses on the behavior of metastatic tumor cells and their specific adhesion molecules. Much of this review is based on the results from our researches over many years. Electron microscopic investigations of metastatic processes have demonstrated that desmosomes, tight junctions, or

The effects of carcinogenic methylcholanthrene on carbohydrate residues of NK cells.

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The present study examines the effect of methylcholanthrene (MCA), a a carcinogenic polycyclic hydrocarbon, on the carbohydrate receptor determinants (RD) on natural killer (NK) cell surface using the bead-coupled lectin assay. Murine NK cells exhibited different degrees of preferential binding to

The expression of carbohydrate antigens in activated T cells and in autoimmune diseases.

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Cell surface carbohydrate antigens have been implicated in cell differentiation and maturation and may play a role in immunoregulation. The expression of carbohydrates in peripheral blood lymphocytes (PBL) was studied by double immunofluorescence flow cytometry, using MoAbs CT1 and CT2 but only a

Alterations of cell surface carbohydrates and inhibition of metastatic property of murine melanomas by alpha 1,3 galactosyltransferase gene transfection.

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Three melanomas of C57BL/6 mice (BL6, JB/MS, and JB/RH) share several phenotypic properties. All these cells contain melanoma-specific ecotropic C-type retrovirus that encodes melanoma-associated antigen recognizable by MM2-9B6 mAb. They do not express H-2Kb molecules, and the alpha-galactosyl

A mannose-specific lectin from Vicia villosa seeds.

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A lectin specific to mannose has been purified from Vicia villosa seed by (NH4)2SO4 fractionation, GalNAc-Sepharose and Man-Sepharose affinity chromatography. It was defined as VVLM, which showed a single band on an acidic-PAGE stained with Coomassie brilliant blue. The molecular weight of VVLM was

Carbohydrate components of human immunodeficiency viruses type I and II.

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The terminal carbohydrate residues of HIV I and II were detected by ferritin labeled lectins in electron microscopy. Different cell lines, which were infected with HIV I and II, expressed different terminal carbohydrate residues, which could also be detected on the viral envelope by

Coordinate expression of cytolytic activity and cytotoxic T cell-specific carbohydrate antigens in a T cell hybridoma.

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The expression of cytotoxic T lymphocyte (CTL)-specific carbohydrate antigens (termed CT antigens) was studied by using a cytolytically inducible T cell hybridoma, KSH4.13.6. Expression of the CT determinants occurred concomitantly with the expression of cytolytic activity after induction of the

Chemical modification of carbohydrates in tissue sections may unmask mucin antigens.

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Expression of mucins in cells and tissues is of great diagnostic and prognostic importance, and immunohistochemistry frequently is used to detect them. Reports concerning mucin localization in sections sometimes are conflicting, however, partly because immunogenic regions of the mucin molecule may

A method for triple fluorescence labeling with Vicia villosa agglutinin, an anti-parvalbumin antibody and an anti-G-protein-coupled receptor antibody.

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The aim of the original study [S.B. Bausch, C. Chavkin, Vicia villosa agglutinin labels a subset of neurons coexpressing both the mu opioid receptor and parvalbumin in the developing rat subiculum, Dev. Brain Res., 97, 1996, 169-177] [3] was to develop a method for identifying a subset of mu opioid

Amino acid sequence and three-dimensional structure of the Tn-specific isolectin B4 from Vicia villosa.

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The partial amino acid sequence of the tetrameric isolectin B4 from Vicia villosa seeds has been determined by peptide analysis, and its three-dimensional structure solved by molecular replacement techniques and refined at 2.9 A resolution to a crystallographic R-factor of 21%. Each subunit displays

Carbon sources of natural cyanamide in Vicia villosa subsp. varia.

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The ¹³C labels of [¹³C]carbon dioxide and D-[¹³C₆]glucose were incorporated into cyanamide (NH₂CN) when they were administered to Vicia villosa subsp. varia shoots. In contrast, the administration of sodium [2,3-¹³C₂]pyruvate did not affect the relative area of the [M + 1]+ ion of cyanamide in the

Detection of Tn antigen with Vicia villosa agglutinin in urinary bladder cancer: its relevance to the patient's clinical course.

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Recently, several investigators have demonstrated that the MN blood group precursor antigens Thomsen-Friedenreich antigen (T-Ag) and Tn-antigen (Tn-Ag) are expressed on the cell surfaces of several cancers, including urinary bladder cancer. T-Ag is composed of a specific carbohydrate chain,

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