Fig. 1
From: A novel nuclear receptor subfamily enlightens the origin of heterodimerization
Phylogenetic position of the NR7 subfamily. A maximum likelihood tree of nuclear receptors (NRs). Classical NR subfamilies are simplified for clarity, and the full topology is indicated only for the bilaterian NR7 subfamily and their close cnidarian relatives. Branch support values are assessed by approximate likelihood-ratio test (aLRT) and are shown only if superior to 0.97, which is considered fully robust. Sequences in bold are new compared to 7. The amphioxus sequence characterized in this paper is indicated by a yellow star. The full tree is available in Additional file 1: Fig. S2, and accession numbers are provided in Additional file 1: Table S1