Negative Ion Fast-atom Bombardment Tandem Mass Spectrometry to Determine Sulfate and Linkage Position in Glycosaminoglycan-derived Disaccharides
Overview
Authors
Affiliations
Negative ion fast-atom bombardment tandem mass spectrometry has been used in the analysis of monosulfated. disaccharides. These commercially obtained disaccharides have been enzymatically prepared from glycosaminoglycans using polysaccharide lyases. Three disaccharides from chondroitin sulfate and dermatan sulfate and two disaccharides from heparan sulfate and chemically derivatized heparin were analyzed. All five disaccharides were isomeric, with differences in sulfate position and linkage position. The full-scan mass spectra are useful in differentiating isomers when the sulfate group resides on different saccharide units. This structural information was obtained from fragment ions produced through cleavage at the glycosidic linkage. The full-scan mass spectra of each monosulfated disaccharide also produced intense molecular anions having long lifetimes. Collisional activation of these resulted in tandem mass spectra rich in significant product ions. Some of these fragment ions were formed through ring cleavage and were useful in the determination of both sulfate and linkage position.
Mass Spectrometry for the Analysis of Highly Charged Sulfated Carbohydrates.
Chi L, Amster J, Linhardt R Curr Anal Chem. 2022; 1(3):223-240.
PMID: 35664288 PMC: 9162141. DOI: 10.2174/157341105774573929.
Xu Q, Zhang H, Leng H, You H, Jia Y, Wang S Ultrason Sonochem. 2021; 78:105750.
PMID: 34544014 PMC: 8455865. DOI: 10.1016/j.ultsonch.2021.105750.
Advances in glycosaminoglycan detection.
Khan S, Mason R, Kobayashi H, Yamaguchi S, Tomatsu S Mol Genet Metab. 2020; 130(2):101-109.
PMID: 32247585 PMC: 7198342. DOI: 10.1016/j.ymgme.2020.03.004.
Leach 3rd F, Ly M, Laremore T, Wolff J, Perlow J, Linhardt R J Am Soc Mass Spectrom. 2012; 23(9):1488-97.
PMID: 22825742 PMC: 3875141. DOI: 10.1007/s13361-012-0428-5.
Oh H, Leach 3rd F, Arungundram S, Al-Mafraji K, Venot A, Boons G J Am Soc Mass Spectrom. 2011; 22(3):582-90.
PMID: 21472576 PMC: 3192014. DOI: 10.1007/s13361-010-0047-y.