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- Nilsson, Jonas,1970Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för klinisk kemi och transfusionsmedicin,Institute of Biomedicine, Department of Clinical Chemistry and Transfusion Medicine (author)
Sialic acid capture-and-release and LC-MSn analysis of glycopeptides
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- 2012-10-10
- Totowa, NJ :Humana Press,2013
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- LIBRIS-ID:oai:gup.ub.gu.se/235866
- https://gup.ub.gu.se/publication/235866URI
- https://doi.org/10.1007/978-1-62703-146-2_7DOI
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- Language:English
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- Extracellular glycoproteins frequently carry terminal sialic acids on their N-linked and/or O-linked glycan structures. In this chapter a sialic acid specific capture-and-release protocol for the enrichment of N- and O-glycopeptides originating from glycoproteins in complex biological samples is described. The enriched glycopeptides are subjected to reversed phase liquid chromatography (LC) interfaced with electrospray ionization and multistage tandem mass spectrometry (MSn). The glycopeptide precursor ions are fragmented by collision-induced dissociation (CID) for analysis of the glycan parts in the MS2 spectra. Further fragmentation (i.e., MS 3) of deglycosylated peptide ions results in peptide backbone fragmentation, which is used in protein database searches to identify protein sequences. For O-glycopeptides the use of both CID and electron capture dissociation (ECD) fragmentation of the peptide backbone with intact glycans still attached are used to pinpoint the glycosylation sites of glycopeptides containing several Ser/Thr residues. The step-by-step protocols for fragmentation analyses of O- and N-glycopeptides enriched from human cerebrospinal fiuid are described. © Springer Science+Business Media, LLC 2013.
Subject headings and genre
- NATURVETENSKAP Biologi Biokemi och molekylärbiologi hsv//swe
- NATURAL SCIENCES Biological Sciences Biochemistry and Molecular Biology hsv//eng
- CID
- ECD
- Glycopeptide
- Periodate oxidation
- Sialic acid
- article
- cerebrospinal fluid
- collisionally activated dissociation
- deglycosylation
- electron capture detection
- electrospray mass spectrometry
- human
- peptide analysis
- priority journal
- protein database
- reversed phase liquid chromatography
- tandem mass spectrometry
Added entries (persons, corporate bodies, meetings, titles ...)
- Larson, Göran,1953Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för klinisk kemi och transfusionsmedicin,Institute of Biomedicine, Department of Clinical Chemistry and Transfusion Medicine(Swepub:gu)xlarsg (author)
- Göteborgs universitetInstitutionen för biomedicin, avdelningen för klinisk kemi och transfusionsmedicin (creator_code:org_t)
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- In:Methods in Molecular BiologyTotowa, NJ : Humana Press951, s. 79-1001064-37451940-6029
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