title: Primary structure of the major glycans of the N-acetyllactosamine type derived from the human immunoglobulins M from two patients with Waldenström's macroglobulinemia.
abstract: The carbohydrate chains of the pathological human immunoglobulins M from two patients with Waldenström's macroglobulinemia were released by hydrazinolysis. The N-acetyllactosamine-type glycans were obtained by affinity chromatography on concanavalin A and fractionated by high-voltage paper electrophoresis. The primary structure of the major compounds was elucidated on the basis of carbohydrate analysis, methylation analysis, including mass-spectrometry, and 500 MHz 1H-NMR spectroscopy. For both patients, this appeared to be a monosialyl monofucosyl biantennary structure; the compounds differed by the presence of an intersecting N-acetylglucosamine residue.
mesh_terms: D000606:Amino Sugars / Q000302:isolation & purification*; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002846:Chromatography, Affinity; D004590:Electrophoresis, Paper; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D011134:Polysaccharides / Q000302:isolation & purification*; D008258:Waldenstrom Macroglobulinemia / Q000276:immunology*
chemical_list: D000606:Amino Sugars; D007075:Immunoglobulin M; D011134:Polysaccharides; C000458:N-acetyllactosamine