| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10546689 | Journal of the American Society for Mass Spectrometry | 2005 | 5 Pages |
Abstract
An N-acylated glucagon-like peptide 1 derivative was characterized by Fourier transform ion cyclotron resonance mass spectrometry. Both electron capture dissociation (ECD) and sustained off-resonance irradiation collisionally activated dissociation (SORI-CAD) were employed. While ECD revealed full sequence coverage, site of modification, branching point, structure of the palmitoylated modification, SORI-CAD produced less complete and more ambiguous information attributable to facile losses of the fatty acid group from both parent and fragments. Thus, ECD showed a superior characterization performance over SORI-CAD in analysis of N-acylated polypeptides.
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Authors
Kim F. Haselmann, Per F. Nielsen, Roman A. Zubarev,