Linked Life Data

9241857

Source:http://linkedlifedata.com/resource/pubmed/id/9241857

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1997-9-24
pubmed:abstractText
Electrospray ionization mass spectrometry was used in the negative ion mode to analyze complexes of sucrose octasulfate, sucrose heptasulfate and sulfated alpha-, beta- and gamma-cyclodextrins with synthetically prepared basic peptides, the basic protein ubiquitin and polyamines. The spectra presented demonstrate that complexes with these basic molecules facilitate the analysis of these polysulfated oligosaccharides. Stable (1:1) complexes result from the ion pairing between the protonated basic arginine and lysine residues of the peptide and the anionic sulfate groups of the polysulfated oligosaccharides. Fragmentation of the polysulfated oligosaccharides resulting in the loss of SO3 could be suppressed by controlling the experimental conditions, such as the nozzle-skimmer voltage, used to obtain the spectra. In the absence of fragmentation, it was possible to obtain data on the purity of sucrose octasulfate and sucrose heptasulfate as well as the distribution of the sulfated cyclodextrins. The confounding presence of sodium counter-ions is also eliminated using this method. Complete chemical sulfation of oligosaccharides is difficult to achieve. Thus, data on sample purity are essential for the characterization of sulfated oligosaccharides used as pharmaceutical agents.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1076-5174
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
760-72
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Polysulfated carbohydrates analyzed as ion-paired complexes with basic peptides and proteins using electrospray negative ionization mass spectrometry.
pubmed:affiliation
Wyeth-Ayerst Research, Pearl River, New York 10965, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.