MALDI TOFeTOF MSeMS analysis was performed (in the positive
ion mode) at the MUSC Proteomics Center using an Applied
Biosystems 4700 MALDI MSeMS. MALDI TOF TOF MSeMS was
performed on abundant ions observed in MALDI TOF spectra.
Peptide sequences were obtained from product ion spectra which
are generated for peptide sequences (predicted from the DNA code
of sequenced genomes). The experimental peptide spectra are
compared to these virtual peptide spectra in the NCBI database and
the best matches provided with computer-assistance.