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erythrina/carbohydrate
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Pagina 1 a partire dal 96 risultati
Expression of Erythrina corallodendron lectin in Escherichia coli.
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The cDNA of the Erythrina corallodendron lectin (ECorL) has been expressed in Escherichia coli. For this purpose, an NcoI site was inserted into the cDNA coding for the lectin precursor [Arango, R., Rozenblatt, S. & Sharon, N. (1990) FEBS Lett. 264, 109-112] immediately before the codon GTG
Expression of Gal beta 1-4GlcNAc sequences by human gastrointestinal neoplasms and their precursors as detected by Erythrina cristagalli and Erythrina corallodendron lectins.
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Lectins from Erythrina cristagalli (EGA) and Erythrina corallodendron (ECorA) are well-known to detect type 2 chain oligosaccharides (Gal beta 1-4GlcNAc). These carbohydrate moieties are the biosynthetic precursors of various ABH and Lewis blood group antigens and are therefore also related to
Effect of glycosylation on the structure of Erythrina corallodendron lectin.
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The three-dimensional structure of the recombinant form of Erythrina corallodendron lectin, complexed with lactose, has been elucidated by X-ray crystallography at 2.55 A resolution. Comparison of this non-glycosylated structure with that of the native glycosylated lectin reveals that the tertiary
Purification and partial characterization of alpha-D-mannosidase from Erythrina indica seeds.
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Alpha-D-Mannosidase (EC: 3.2.1.24), a glycoprotein with 8.6% carbohydrate was purified (26 fold purification) to homogeneity from Erythrina indica seeds, by gel filtration on Bio-Gel P-100 and affinity chromatography on Con-A CL Seralose. The enzyme had the molecular mass of 124 kDa and 127 kDa by
Crystal structures of Erythrina cristagalli lectin with bound N-linked oligosaccharide and lactose.
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Erythrina cristagalli lectin (ECL) is a galactose-specific legume lectin. Although its biological function in the legume is unknown, ECL exhibits hemagglutinating activity in vitro and is mitogenic for T lymphocytes. In addition, it has been recently shown that ECL forms a novel conjugate when
Role of N-linked glycan in the unfolding pathway of Erythrina corallodendron lectin.
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Erythrina corallodendron lectin (ECorL) exhibits an exquisitely structured oligosaccharide chain. Interestingly, the bacterially expressed, nonglycosylated counterpart, rECorL, possesses an essentially identical carbohydrate specificity and agglutinating activity as the glycosylated lectin, thus
Sugar competition assays reveal high affinity receptors for Erythrina cristigalli lectin on feline monocytes.
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An examination of fluorescein-labelled Erythrina cristigalli lectin (FITC-ECL) staining on feline mononuclear cells (MNC) using fluorescent microscopy and a novel sugar titration competition assay revealed that monocytes (MO) were stained brighter by FITC-ECL than were lymphocytes (LYM). When MNC
Lectin from Erythrina cristagalli supports undifferentiated growth and differentiation of human pluripotent stem cells.
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Lectins are carbohydrate-binding proteins, which occur ubiquitously in nature and are abundant in all living organisms from bacteria to mammals. They have several biological functions among which cell adhesion is well known and characterized. Based on the characterization of the glycome of human
Differential affinities of Erythrina cristagalli lectin (ECL) toward monosaccharides and polyvalent mammalian structural units.
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Previous studies on the carbohydrate specificities of Erythrina cristagalli lectin (ECL) were mainly limited to analyzing the binding of oligo-antennary Galbeta1-->4GlcNAc (II). In this report, a wider range of recognition factors of ECL toward known mammalian ligands and glycans were examined by
Mutational studies of the amino acid residues in the combining site of Erythrina corallodendron lectin.
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High-resolution X-ray crystallography of the complex of the Gal/GalNAc-specific Erythrina corallodendron lectin with lactose identified the amino acid side chains that form contacts with the galactose moiety of the disaccharide. The contribution of these amino acids to the binding of different
Purification, physicochemical characterization and biological properties of a lectin from Erythrina velutina forma aurantiaca seeds.
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A lectin was purified from seeds of Erythrina velutina forma aurantiaca by affinity chromatography on cross-linked guar gum. The lectin is a potent agglutinin for human (minimal concentration of protein able to cause visible agglutination of a 2% erythrocyte suspension varying from 1 to 4
Spectroscopic studies on Erythrina lysistemon seed lectin: effect of denaturing agents on lectin quaternary structure.
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The equilibrium unfolding of ElysL, a homodimeric legume lectin, was studied using different denaturing agents such as guanidinium chloride (GdnHCl), temperature and pH. Simultaneously, changes in the secondary as well as tertiary structure of lectin were followed by CD spectroscopy examination in
Defining the carbohydrate specificities of Erythrina corallodendron lectin (ECorL) as polyvalent Galbeta1-4GlcNAc (II) > monomeric II > monomeric Gal and GalNAc.
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BACKGROUND
Erythrina corallodendron lectin (ECorL) is one of the potent applied lectins. In previous studies, the carbohydrate specificities of this lectin were limited to monosaccharides, simple oligosaccharides and several clusters. However, the polyvalent factor has not been
Isolation, purification, and physicochemical characterization of a D-galactose-binding lectin from seeds of Erythrina speciosa.
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A lectin was isolated from the saline extract of Erythrina speciosa seeds by affinity chromatography on lactose-Sepharose. The lectin content was about 265 mg/100g dry flour. E. speciosa seed lectin (EspecL) agglutinated all human RBC types, showing no human blood group specificity; however a slight
Structural requirements for the binding of oligosaccharides to immobilized lectin of Erythrina variegata (Linn) var. orientalis.
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The structural requirements for the interaction of asparagine-linked oligosaccharide moieties of glycoproteins with Erythrina variegata agglutinin (EVA) were investigated by means of affinity chromatography on an EVA-Sepharose column. Some of the branched poly-N-acetyllactosamine-type
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