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| Peptide name | Sequence | M.W. |
| GTP-Binding Protein Fragment, G alpha | CGAGESGKSTIVKQMK |
1622.92 |
| GTP-Binding Protein Fragment, G beta | CEGNVRVSRELAGHTGY | 1847.03 |
| GTP-Binding Protein Fragment, Gs alpha | CKQLQKDKQVYRATHR | 2002.4 |
| [Arg8] GTP-Binding Protein Fragment, Gs alpha | CKQLQRDRQVYRATHR | 2057.36 |
| GTP-Binding Protein Fragment, Go alpha | CNLKEDGISAAKDVK | 1589.82 |
