Table I. CHH-family neuropeptides identified in this study.
| Species | Peptide name | Calcd. MWa | Exptl. MWa | Error/ppm | PTMb | Organ |
|---|---|---|---|---|---|---|
| C. sapidus | Cas−SG−CHH | 8472.800/8478.847 | 8472.948/8478.878 | 17.5/3.7 | pQ,C-NH2 | SG |
| Cas−SG−MIH | 9065.364/9071.435 | 9065.391/9071.424 | 3.0/1.2 | − | SG | |
| Cas−PO−CHH | 8395.644/8401.691 | 8395.643/− | 0.1/− | pQ,3Mox | PO | |
| C. borealis | Cab−SG−CHH-I | 8539.876/8545.923 | 8539.892/8545.934 | 1.9/1.3 | pQ,C-NH2 | SG |
| Cab−SG−CHH-II | 8556.903/8562.950 | 8556.913/8562.958 | 1.2/0.9 | C-NH2 | SG | |
| Cab−SG−MIH | 8932.189/8938.235 | 8932.302/8938.230 | 12.7/0.6 | C-NH2 | SG | |
| Cab−SG−MOIH | 9252.258/9258.305 | 9252.346/9258.278 | 9.5/2.9 | − | SG |
a MW of intact peptide/MW of “reduced” peptide. The observed m/z values and charge states of intact peptides are listed in Table S2.
b pQ, pyro-Glu; C-NH2, C-terminal amidation; Mox, methionine oxidation.