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Titolo:
COMPARISON OF FRAGMENTATION MODES FOR THE STRUCTURAL DETERMINATION OFCOMPLEX OLIGOSACCHARIDES IONIZED BY MATRIX-ASSISTED LASER DESORPTION IONIZATION MASS-SPECTROMETRY/
Autore:
HARVEY DJ; NAVEN TJP; KUSTER B; BATEMAN RH; GREEN MR; CRITCHLEY G;
Indirizzi:
UNIV OXFORD,DEPT BIOCHEM,OXFORD GLYCOBIOL INST,S PARKS RD OXFORD OX1 3QU ENGLAND FISONS INSTRUMENTS PLC,VG ANALYT MANCHESTER M23 9LZ LANCS ENGLAND
Titolo Testata:
Rapid communications in mass spectrometry
fascicolo: 15, volume: 9, anno: 1995,
pagine: 1556 - 1561
SICI:
0951-4198(1995)9:15<1556:COFMFT>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
DESORPTION; MS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
D.J. Harvey et al., "COMPARISON OF FRAGMENTATION MODES FOR THE STRUCTURAL DETERMINATION OFCOMPLEX OLIGOSACCHARIDES IONIZED BY MATRIX-ASSISTED LASER DESORPTION IONIZATION MASS-SPECTROMETRY/", Rapid communications in mass spectrometry, 9(15), 1995, pp. 1556-1561

Abstract

Fragment ions from underivatized N-linked oligosaccharides ionized bymatrix-assisted laser desorption/ionization mass spectrometry were obtained by spontaneous fragmentation on a magnetic sector mass spectrometer, by post-source decay (PSD) on a reflectron time-of-flight (TOF) instrument and by collision induced dissociation on a magnetic sector instrument fitted with an orthogonal-TOF analyser, Spontaneous fragmentation on the magnetic sector instrument produced ions mainly by glycosidic cleavage together with two abundant ions formed by cross-ring cleavage of the reducing-terminal residue. The PSD spectra were similar,the majority of ions being formed by glycosidic cleavage. Internal fragment ions were abundant. High-energy collision-induced dissociation spectra, recorded with the orthogonal-TOF analyser, differed considerably from the other types of spectra, particularly in the appearance ofmajor fragment ions produced by cross-ring cleavages of most of the constituent monosaccharide residues. These ions allowed much sequence and branching information to be obtained from the oligosaccharide.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 21:50:29