9 resultados
A novel plant lectin has been isolated from the rhizomes of Calystegia sepium (hedge bindweed) and partially characterized. The lectin is a dimeric protein composed of two identical non-covalently linked subunits of 16 kDa. Hapten inhibition studies indicate that the novel lectin is best inhibited
cDNA clones encoding the mitogenic mannose/maltose-specific lectin from the rhizomes of hedge bindweed (Calystegia sepium) have been isolated and sequenced. Comparison of the deduced amino acid sequence and the molecular weight of the lectin subunit as determined by mass spectrometry indicated that
A mannose-specific lectin from Calystegia sepium has been crystallized by the hanging-drop vapour-diffusion method using ammonium sulfate as precipitant. The needle-shaped crystals are orthorhombic, space group C222(1) with cell dimensions a = 55.2(1), b = 55.9 (1), c = 196.1 (1) A. Fresh crystals
The high number of quaternary structures observed for lectins highlights the important role of these oligomeric assemblies during carbohydrate recognition events. Although a large diversity in the mode of association of lectin subunits is frequently observed, the oligomeric assemblies of plant
A galactose-specific and a mannose-specific lectin of the family of the jacalin-related lectins have been localized by immunofluorescence microscopy. The present localization studies provide for the first time unambiguous evidence for the cytoplasmic location of the mannose-specific jacalin-related
This paper extends our knowledge of the rather bizarre carbohydrate binding poperties of the banana lectin (Musa acuminata). Although a glucose/mannose binding protein which recognizes alpha-linked gluco-and manno-pyranosyl groups of polysaccharide chain ends, the banana lectin was shown to bind to
The stimulatory or inhibitory effects of plant lectins on the production of gelatinase A (MMP-2) and gelatinase B (MMP-9) by mononuclear white blood cells was investigated by substrate zymography. Leukocyte cultures from 24-h old buffy coats were spontaneously activated and produced high levels of
The Jacalin-related lectin (JRL) family comprises galactose-binding-type (gJRLs) and mannose-binding-type (mJRLs) lectins. Although the documented occurrence of gJRLs is confined to the family Moraceae, mJRLs are widespread in the plant kingdom. A detailed comparison of sugar-binding specificity was
Altered glycosylation associated with hepatocellular carcinoma (HCC) is well documented. However, few reports have investigated the association between dedifferentiation and glycosylation. Therefore, the aim of this study was to analyze glycosylation associated with dedifferentiation