Bioinformatic Discovery of a Cambialistic Monooxygenase.
Liu, C., Powell, M.M., Rao, G., Britt, R.D., Rittle, J.(2024) J Am Chem Soc 146: 1783-1788
- PubMed: 38198693 
- DOI: https://doi.org/10.1021/jacs.3c12131
- Primary Citation of Related Structures:  
8SM6, 8SM7, 8SM8, 8SM9, 8SMA - PubMed Abstract: 
Dinuclear monooxygenases mediate challenging C-H bond oxidation reactions throughout nature. Many of these enzymes are presumed to exclusively utilize diiron cofactors. Herein we report the bioinformatic discovery of an orphan dinuclear monooxygenase that preferentially utilizes a heterobimetallic manganese-iron (Mn/Fe) cofactor to mediate an O 2 -dependent C-H bond hydroxylation reaction. Unlike the structurally similar Mn/Fe-dependent monooxygenase AibH2, the diiron form of this enzyme (SfbO) exhibits a nascent enzymatic activity. This behavior raises the possibility that many other dinuclear monooxygenases may be endowed with the capacity to harness cofactors with a variable metal content.
Organizational Affiliation: 
Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States.