Table 1.
Neurohypophysial hormones in vertebrates
| Vasopressin homologs | ||
|---|---|---|
| Vasopressin | Cys-Tyr-Phe-Gln-Asn-Cys-Pro-Arg-Gly (NH2) | Mammals |
| [Lys8]vasopressin | Cys-Tyr-Phe-Gln-Asn-Cys-Pro-Lys-Gly (NH2) | Pigs and some marsupials |
| [Phe2]vasopressin | Cys-Phe-Phe-Gln-Asn-Cys-Pro-Arg-Gly (NH2) | Some marsupials |
| Vasotocin | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Arg-Gly (NH2) | Non-mammals |
| Oxytocin homologs | ||
| Oxytocin | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly (NH2) | Mammals, some marsupials, platypus, ratfish (H. colliei) |
| Mesotocin | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Ile-Gly (NH2) | Some marsupials, non-eutherian tetrapods, some lungfishes |
| [Phe2]mesotocin | Cys-Phe-Ile-Gln-Asn-Cys-Pro-Ile-Gly (NH2) | Australian lungfish |
| Isotocin | Cys-Tyr-Ile-Ser-Asn-Cys-Pro-Ile-Gly (NH2) | Ray-finned fishes |
| Glumitocin | Cys-Tyr-Ile-Ser-Asn-Cys-Pro-Gln-Gly (NH2) | Skates |
| Valitocin | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Val-Gly (NH2) | Sharks (Sq. acanthias) |
| Aspargtocin | Cys-Tyr-Ile-Asn-Asn-Cys-Pro-Leu-Gly (NH2) | Sharks (Sq. acanthias) |
| Asvatocin | Cys-Tyr-Ile-Asn-Asn-Cys-Pro-Val-Gly (NH2) | Sharks (Sc. canicula; T. scyllium) |
| Phasitocin | Cys-Tyr-Phe-Asn-Asn-Cys-Pro-Ile-Gly (NH2) | Sharks (T. scyllium) |
| Phasvatocin | Cys-Tyr-Phe-Asn-Asn-Cys-Pro-Val-Gly (NH2) | Sharks (Sc. canicula) |
Adapted from Gimpl and Fahrenholz [47], and Hyodo et al. [48].