title: Proteomic analysis of post-translational modifications.
abstract: Post-translational modifications modulate the activity of most eukaryote proteins. Analysis of these modifications presents formidable challenges but their determination generates indispensable insight into biological function. Strategies developed to characterize individual proteins are now systematically applied to protein populations. The combination of function- or structure-based purification of modified 'subproteomes', such as phosphorylated proteins or modified membrane proteins, with mass spectrometry is proving particularly successful. To map modification sites in molecular detail, novel mass spectrometric peptide sequencing and analysis technologies hold tremendous potential. Finally, stable isotope labeling strategies in combination with mass spectrometry have been applied successfully to study the dynamics of modifications.
authors.affiliation: Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, Odense M, DK-5230 Denmark. mann@bmb.sdu.dk
authors.forename: Matthias
authors.initials: M
authors.lastname: Mann
authors.forename: Ole N
authors.initials: ON
authors.lastname: Jensen
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods; D015180:Electrophoresis, Gel, Two-Dimensional / Q000379:methods; D007553:Isotope Labeling / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods*; D008970:Molecular Weight; D011487:Protein Conformation; D011499:Protein Processing, Post-Translational; D011506:Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D040901:Proteomics / Q000379:methods*; D011994:Recombinant Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D020539:Sequence Analysis, Protein / Q000379:methods
chemical_list: D011506:Proteins; D011994:Recombinant Proteins