The Origin and Evolution of Baeyer—Villiger Monooxygenases BVMOs: An Ancestral Family of Flavin MonooxygenasesReportar como inadecuado




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The Baeyer—Villiger Monooxygenases BVMOs are enzymes belonging to the -Class B- of flavin monooxygenases and are capable of performing exquisite selective oxidations. These enzymes have been studied from a biotechnological perspective, but their physiological substrates and functional roles are widely unknown. Here, we investigated the origin, taxonomic distribution and evolutionary history of the BVMO genes. By using in silico approaches, 98 BVMO encoding genes were detected in the three domains of life: Archaea, Bacteria and Eukarya. We found evidence for the presence of these genes in Metazoa Hydra vulgaris, Oikopleura dioica and Adineta vaga and Haptophyta Emiliania huxleyi for the first time. Furthermore, a search for other -Class B- monooxygenases flavoprotein monooxygenases –FMOs – and N-hydroxylating monooxygenases – NMOs was conducted. These sequences were also found in the three domains of life. Phylogenetic analyses of all -Class B- monooxygenases revealed that NMOs and BVMOs are monophyletic, whereas FMOs form a paraphyletic group. Based on these results, we propose that BVMO genes were already present in the last universal common ancestor LUCA and their current taxonomic distribution is the result of differential duplication and loss of paralogous genes.



Autor: Maria Laura Mascotti, Walter Jesús Lapadula, Maximiliano Juri Ayub

Fuente: http://plos.srce.hr/



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