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Flavin-Dependent Redox Transfers by the Two-Component Diketocamphane Monooxygenases of Camphor-Grown Pseudomonas putida NCIMB 10007

Willetts, Andrew and Kelly, David 2016. Flavin-Dependent Redox Transfers by the Two-Component Diketocamphane Monooxygenases of Camphor-Grown Pseudomonas putida NCIMB 10007. Microorganisms 4 (4) , 38. 10.3390/microorganisms4040038

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Abstract

The progressive titres of key monooxygenases and their requisite native donors of reducing power were used to assess the relative contribution of various camphor plasmid (CAM plasmid)- and chromosome-coded activities to biodegradation of (rac)-camphor at successive stages throughout growth of Pseudomonas putida NCIMB 10007 on the bicylic monoterpenoid. A number of different flavin reductases (FRs) have the potential to supply reduced flavin mononucleotide to both 2,5- and 3,6-diketocamphane monooxygenase, the key isoenzymic two-component monooxygenases that delineate respectively the (+)- and (−)-camphor branches of the convergent degradation pathway. Two different constitutive chromosome-coded ferric reductases able to act as FRs can serve such as role throughout all stages of camphor-dependent growth, whereas Fred, a chromosome-coded inducible FR can only play a potentially significant role in the relatively late stages. Putidaredoxin reductase, an inducible CAM plasmid-coded flavoprotein that serves an established role as a redox intermediate for plasmid-coded cytochrome P450 monooxygenase also has the potential to serve as an important FR for both diketocamphane monooxygenases (DKCMOs) throughout most stages of camphor-dependent growth.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Uncontrolled Keywords: diketocamphane monooxygenase; flavin reductase; putidaredoxin reductase; Pseudomonas putida NCIMB 10007
Publisher: MDPI Publishing
ISSN: 2076-2607
Date of First Compliant Deposit: 19 April 2017
Date of Acceptance: 3 October 2016
Last Modified: 16 May 2019 14:10
URI: https://orca.cardiff.ac.uk/id/eprint/99944

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