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. 2012 Jul 18;7(7):e40787. doi: 10.1371/journal.pone.0040787

Figure 5. Maximum parsimony tree of serotonin receptors.

Figure 5

Phylogenetic analysis was performed using planarian (S. mediterranea and D. japonica), parasite (S. mansoni), human and C. elegans 5-HT receptors and putative 5-HT receptors. TM domains I-VII were were extracted from the alignment for bootstrapping (bootstrap value Inline graphic 1000). Outlined receptors are significantly diverged from vertebrate and ecdysozoan serotonin receptors. DtSER-1 (red) was amplified using a degenerate PCR strategy and was chosen to undergo RNAi-based deorphanization.