Additional file 1: of Ancient coexistence of norepinephrine, tyramine, and octopamine signaling in bilaterians BauknechtPhilipp JékelyGáspár 2017 Maximum likelihood tree of adrenergic, octopamine, and tyramine receptors. Bootstrap support values are shown. This tree contains all investigated GPCRs. The tree was rooted on 5HT receptor sequences. Sub-trees are shown in Additional files 2, 3, 4, 5, 6, 7, and 8. (PDF 118 kb)