Journal: Molecular & Cellular Proteomics : MCP
Article Title: Laserspray Ionization, a New Method for Protein Analysis Directly from Tissue at Atmospheric Pressure with Ultrahigh Mass Resolution and Electron Transfer Dissociation *
Figure Lengend Snippet: LSI mass spectra from aged mouse brain tissue washed with ethanol and spotted with 2,5-DHAP matrix in 50:50 ACN:water using an Orbitrap Exactive mass spectrometer. A , full mass spectrum with insets showing multiple charged protein and peptide ions. B , limited mass range between m/z 650 and 1000 is displayed with monoisotopic molecular weights of the various multiply charged ions presented. Rel. Abund. , relative abundance.
Article Snippet: Searches within 1-Da mass error were performed, but to consider a peptide as well matched, it had to be within < 5 ppm of the mass obtained from the Orbitrap Exactive.
Techniques: Mass Spectrometry