Dermatan Sulfate-Reactive Lectin from Chicken Liver

• Published in: Journal of biochemistry (Tokyo) Vol. 98; no. 2; pp. 385 - 393
• Main Authors: KITAGAKI, Haruko, MATSUMOTO, Isamu, SASAKI, Hitomi, SENO, Nobuko
• Format: Journal Article
• Language: English
• Published: Oxford Oxford University Press 01.08.1985
• Subjects: Amino Acids - analysis; Analytical, structural and metabolic biochemistry; Animals; Biological and medical sciences; Carbohydrate Metabolism; Chickens; Chondroitin - analogs & derivatives; Dermatan Sulfate - metabolism; Erythrocytes - immunology; Fundamental and applied biological sciences. Psychology; Glycoproteins; Hemagglutination; Kinetics; Lectins - immunology; Lectins - isolation & purification; Lectins - metabolism; Liver - metabolism; Molecular Weight; Proteins; Sheep; Spectrometry, Fluorescence; Structure-Activity Relationship; Characterization; Lectin; Vertebrata; Purification; Animal; Liver; Spectral properties; Molecular interaction; Carbohydrate; Chicken; Aves; Physical properties
• ISSN: 0021-924X; 1756-2651
• DOI: 10.1093/oxfordjournals.jbchem.a135293

A lectin highly reactive with dermatan sulfate (DS-lectin) was purified from adult chicken liver by gel filtration on Toyopearl HW-55 and subsequent affinity chromatography on new adsorbents which were prepared by immobilizing heparin or dermatan sulfate via the reducing ends on hydrazino-Toyopearl. The DS-lectin behaved as a single protein on polyacrylamide gel electrophoresis. On excitation at 280 nm, the DS-lectin emitted fluorescence centered at 336 nm, which was attributable to tryptophan residues and could be quenched by the addition of specific saccharides. The affinity constants of the DS-lectin with specific saccharides were calculated from the changes in intensities of fluorescence-difference spectra induced by the saccharides. Dermatan sulfate and protuberic acid, which is composed of L-iduronic acid and D-glucuronic acid (1: 2), had the highest affinity constants among the polysaccharides tested. Partially N-desulfated heparin had a higher affinity constant than that of native heparin while dextran sulfate showed no affinity. D-Glucuronic acid and N-acetylneuraminic acid induced weak but significant quenching, but not N-acetylgalactosamine or cellobiose. These results were essentially in good agreement with those of hemagglutination inhibition tests and indicated that DS-lectin has a strong affinity for L-iduronic acid residues and probably carboxyl groups in the saccharides, while sulfate groups on the saccharides interfere with the specific interaction.