More Lineage Specific Biologydiscovered. Not only is it from a vertebrate (the Japanese eel), but its fluorescence mechanism is different (it uses bilirubin, the four-ring molecule that we shouldn’t have too much of). As one researcher put it, “It’s totally different. There’s not anything you can point to that’s the same.”
This new protein is another example of the incredible genius and creativity we find in biology, and it appears to be another example of the lineage-specific biology which runs counter to the expectations of common descent.