title: Automated nanoflow liquid chromatography-tandem mass spectrometry for a differential display proteomic study on Xenopus laevis neuroendocrine cells.
abstract: Many proteomic projects based on a comparison of protein profiles displayed on two-dimensional polyacrylamide gel electrophoresis rely on the identification of these proteins using peptide mass fingerprinting on a matrix-assisted laser desorption/ionization mass spectrometer after tryptic digestion. However, this approach is limited to an organism of which genomic information is largely available, i.e. when the total genome sequence is known. For other organisms, mass spectrometric sequence analysis is necessary for protein identification. We established a nano-LC-MS-MS system based on a quadrupole time-of-flight mass spectrometer, which allows automated sequence analysis of tryptic digestion mixtures from single gel spots. This system is applied in a differential-display proteomic study to identify differentially expressed proteins in the neuroendocrine cells of the neurointermediate pituitary of black- and white-background adapted Xenopus laevis.
authors.affiliation: Laboratory of Protein Biochemistry and Protein Engineering, University of Ghent, Ghent, Belgium.
authors.forename: B
authors.initials: B
authors.lastname: Devreese
authors.forename: K P C
authors.initials: KP
authors.lastname: Janssen
authors.forename: F
authors.initials: F
authors.lastname: Vanrobaeys
authors.forename: F
authors.initials: F
authors.lastname: Van Herp
authors.forename: G J M
authors.initials: GJ
authors.lastname: Martens
authors.forename: J
authors.initials: J
authors.lastname: Van Beeumen
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D015180:Electrophoresis, Gel, Two-Dimensional; D013058:Mass Spectrometry / Q000379:methods*; D036103:Nanotechnology; D009490:Neurosecretory Systems / Q000737:chemistry* / Q000166:cytology; D011506:Proteins / Q000737:chemistry*; D020543:Proteome; D014982:Xenopus laevis
chemical_list: D011506:Proteins; D020543:Proteome