Table II.
List of calculated, protein specific positive ion fragments used for ToF-SIMS data analysis.
| Source | Mass | Species |
|---|---|---|
| Protein specific positive ion fragments | ||
| All | 18.03 | NH4+ |
| Glycine | 28.02 | CH2N+ |
| Alanine | 44.05 | C2H6N+ |
| Tyrosine | 55.02 | C3H3O+ |
| Serine | 60.04 | C2H6NO+ |
| Proline | 68.05 | C4H6N+ |
| Proline | 70.07 | C4H8N+ |
| Valine | 72.08 | C4H10N+ |
| Threonine | 74.06 | C3H8NO+ |
| Histidine | 81.05 | C4H5N2+ |
| Glutamine | 84.04 | C4H6NO+ |
| Lysine | 84.08 | C5H10N+ |
| Glycine | 85.04 | C3H5N2O+ |
| Isoleucine | 86.10 | C5H12N+ |
| Aspartic acid | 88.04 | C3H6NO2+ |
| Arginine | 100.09 | C4H10N3+ |
| Arginine | 101.10 | C4H11N3+ |
| Tyrosine | 107.05 | C7H7O+ |
| Arginine/Histidine | 110.07 | C5H8N3+ |
| Phenylalanine | 120.08 | C8H10N+ |
| Arginine | 127.10 | C5H11N4+ |
| Tyrosine | 136.08 | C8H10NO+ |