Figure 4From: Domain atrophy creates rare cases of functional partial protein domainsA section of the phylogenetic tree of bacterial luciferase domains. The bacterial luciferase, non-fluorescent flavoprotein (LuxF) and the alkanal monooxygenase beta (LuxB) share a common ancestor. The ancestral fold of luciferase is a complete TIM-barrel fold observed in LuxB and LuxA proteins.Back to article page