FIG 5.

Estimation of orthologous group (OG) turnover events for Hydrothermarchaeota and related euryarchaeotal orders and classes. The numbers of OGs (numbers in rectangles) and inferred OG gain and loss numbers (red and blue numbers) are labeled accordingly on the tree nodes and tips. The numbers in circles indicate the order of nodes and tips. The COG category information of the OGs gained or lost for the Hydrothermarchaeota clade was parsed and is depicted. Important genes that were involved in the OG gain events in the Hydrothermarchaeota clade were also labeled at the corresponding nodes.