Detection and quantification of the sulfated disaccharides in chondroitin sulfate by electrospray tandem mass spectrometry.
A new method of identifying and quantifying the disaccharide building blocks of glycosaminoglycans is introduced. The polysaccharides are subjected to an enzymatic digestion that releases the sulfated disaccharides. The disaccharides are then identified using a combination of electrospray ionization mass spectrometry and tandem mass spectrometry. Quantification of the isomeric disaccharides is also achieved by tandem mass spectrometry, using a recently developed methodology which quantifies mixtures of isomers without the use of chromatography or prior separation. Using mass spectrometry to characterize the components of glycosaminoglycans significantly reduces both sample consumption and analysis time of traditional methods.
Desaire
H
H
University of California, Berkeley 94720, USA.
Leary
J A
JA
D019765:Chondroitin ABC Lyase; D002809:Chondroitin Sulfates / Q000737:chemistry*; D004187:Disaccharides / Q000737:chemistry* / Q000592:standards; D006868:Hydrolysis; D013058:Mass Spectrometry; D012015:Reference Standards
D004187:Disaccharides; D002809:Chondroitin Sulfates; D019765:Chondroitin ABC Lyase