Proc Biol Sci 1991 Feb 22;2431307:121-7. doi: 10.1098/rspb.1991.0020.

The SALMFamides: a new family of neuropeptides isolated from an echinoderm.

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We have isolated two novel related neuropeptides from the radial nerve cords of the starfishes Asterias rubens and Asterias forbesi. One is an octapeptide with the amino acid sequence Gly-Phe-Asn-Ser-Ala-Leu-Met-Phe-NH2 and the other is a dodecapeptide with the amino acid sequence Ser-Gly-Pro-Tyr-Ser-Phe-Asn-Ser-Gly-Leu-Thr-Phe-NH2. The peptides were purified using high performance liquid chromatography (HPLC) and a radioimmunoassay for the molluscan FMRFamide-related neuropeptide, pQDPFLRFamide. Both peptides share minimal sequence identity with members of the family of FMRFamide-like peptides so we have designated them as founder members of a new family, the SALMFamides. We refer to the octapeptide as SALMFamide 1 (S1) and the dodecapeptide as SALMFamide 2 (S2). S1 and S2 are the first neuropeptides identified in species belonging to the phylum Echinodermata.

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Genes referenced: pus1 thrb