4d03
Structure of the Cys65Asp mutant of phenylacetone monooxygenase: oxidised stateStructure of the Cys65Asp mutant of phenylacetone monooxygenase: oxidised state
Structural highlights
Publication Abstract from PubMedBy a targeted enzyme engineering approach, we were able to create an efficient NADPH oxidase from a monooxygenase. Intriguingly, replacement of only one specific single amino acid was sufficient for such a monooxygenase-to-oxidase switch-a complete transition in enzyme activity. Pre-steady-state kinetic analysis and elucidation of the crystal structure of the C65D PAMO mutant revealed that the mutation introduces small changes near the flavin cofactor, resulting in a rapid decay of the peroxyflavin intermediate. The engineered biocatalyst was shown to be a thermostable, solvent tolerant, and effective cofactor-regenerating biocatalyst. Therefore, it represents a valuable new biocatalytic tool. Finding the Switch: Turning a Baeyer-Villiger Monooxygenase into a NADPH Oxidase.,Brondani PB, Dudek HM, Martinoli C, Mattevi A, Fraaije MW J Am Chem Soc. 2014 Dec 1. PMID:25423359[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
|
| ||||||||||||||||||||