Figure 6.

Condensed phylogenetic distance tree of group E monooxygenases. Group E enzymes cluster in two different types (E1 and E2). Styrene monooxygenases (SMOs) that are edged by a bracket are proven or likely involved in styrene degradation, as the strains harbor cognate gene clusters [118,119,120,121,122]. Amino acid sequences were aligned by using the ClustalW algorithm and after phylogenetic analysis, the maximum likelihood tree was constructed applying the MEGA7 software with bootstraps of 1000 replicates [50]. Fusion proteins were truncated for the reductase part.