FIGURE 1.

Summary of identified genes encoding putative full- or partial-length neuropeptide precursors from the P. yessoensis nerve ganglia transcriptome and proteome. The 20 ancestral bilaterian neuropeptide precursors are in red; the 12 neuropeptide precursors which exist in all the major groups of protostomes are in green; the 7 neuropeptide precursors only found in Mollusca, Annelida, and Nematoda are in purple; the 11 neuropeptide precursors that were only characterized in Lophotrochozoa are in yellow; the 13 potentially novel neuropeptide precursors are in blue.