Distribution of mutations in the three-dimensional structure of cetacean Hr. The RD3 and JmjC domains are colored yellow and green, respectively. Locations marked in red coincide with mutations found within cetaceans and toothed whales within the RD3 and JmjC regions.
Chen et al. BMC Evolutionary Biology 2013 13:34 doi:10.1186/1471-2148-13-34