Caenorhabditis elegans possesses three groups of neuropeptides designated as MRFamide-like peptide (FLP), insulin-like (INS), as well as neuropeptide-like proteins (NLP) [1]. The NLP family keeps expanding, but the function of most of the members is still unknown [2,3]. This family represents NLP-36 from C. elegans and related proteins.

1: Neuropeptidergic signaling in the nematode Caenorhabditis elegans. Husson SJ, Mertens I, Janssen T, Lindemans M, Schoofs L; Prog Neurobiol. 2007;82:33-55. PMID:17383075

2: Comparison of Caenorhabditis elegans NLP peptides with arthropod neuropeptides. Husson SJ, Lindemans M, Janssen T, Schoofs L; Trends Parasitol. 2009;25:171-181. PMID:19269897

3: Neuropeptide-like protein diversity in phylum Nematoda. McVeigh P, Alexander-Bowman S, Veal E, Mousley A, Marks NJ, Maule AG; Int J Parasitol. 2008;38:1493-1503. PMID:18602104