Figure 6

Consensus phylogenetic tree of vertebrate kisspeptin receptors (KissR). This phylogenetic tree was constructed based on the amino-acid sequences of KissR using the Maximum Likelihood method with 1,000 bootstrap replicates (for the alignment and references of the sequences see Additional files 5 and 6: Figure S4 and Table S2). The number shown at each branch node indicates the bootstrap value (%); only values and branching above 70% are indicated. The tree was rooted using the two sequences of the hemichordata acorn worm Kissr1 and Kissr2 and the two sequences of echinodermata purple sea urchin GPR54_short and GPR54_long. The sauropsid KissR are in red.