title: Structural analysis of 2D-gel-separated glycoproteins from human cerebrospinal fluid by tandem high-resolution mass spectrometry.
abstract: The feasibility of global glycoprotein analysis by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and infrared multiphoton dissociation (IRMPD) tandem mass spectrometry is demonstrated. Combined 2D gel glycoprotein separation and visualization, in-gel digestion, and accurate (<10 ppm) mass measurement allowed identification of human glycoproteins and revealed differences in glycosylation. IRMPD obviates the need for glycan release, which prevents sample dispersal, and allows the assignment of glycan structures to specific sites of N-glycosylation.
authors.affiliation: Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310-3706, USA.
authors.forename: Kristina
authors.initials: K
authors.lastname: Håkansson
authors.forename: Mark R
authors.initials: MR
authors.lastname: Emmett
authors.forename: Alan G
authors.initials: AG
authors.lastname: Marshall
authors.forename: Pia
authors.initials: P
authors.lastname: Davidsson
authors.forename: Carol L
authors.initials: CL
authors.lastname: Nilsson
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D015180:Electrophoresis, Gel, Two-Dimensional; D006023:Glycoproteins / Q000134:cerebrospinal fluid* / Q000737:chemistry* / Q000378:metabolism; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods*; D008969:Molecular Sequence Data; D010455:Peptides / Q000134:cerebrospinal fluid / Q000737:chemistry / Q000378:metabolism; D011487:Protein Conformation; D020033:Protein Isoforms / Q000134:cerebrospinal fluid / Q000737:chemistry / Q000378:metabolism
chemical_list: D006023:Glycoproteins; D010455:Peptides; D020033:Protein Isoforms