Volume 234, 2022

Exploring hitherto uninvestigated reactions of the fatty acid peroxygenase CYP152A1: catalase reaction and Compound I formation

Abstract

CYP152A1 (cytochrome P450BSβ) is a fatty acid peroxygenase, which specifically catalyses the oxidation of long-chain fatty acids using hydrogen peroxide as an oxidant. We have found that CYP152A1 possesses catalase activity, which competes with the hydroxylation of long-chain fatty acids, the oxidation of non-native substrates, and haem degradation. Using hydrogen peroxide, Compound I of CYP152A1 could not be observed, due to its swift decomposition via catalase activity, where Compound I reacts with another molecule of hydrogen peroxide to form O2. In contrast, a clear spectral change indicative of Compound I formation was observed when mCPBA was employed as the oxidant. This work presents valuable insights into an important role for the catalase activity of CYP152A1 in avoiding enzyme deactivation when no substrate is available for oxidation.

Graphical abstract: Exploring hitherto uninvestigated reactions of the fatty acid peroxygenase CYP152A1: catalase reaction and Compound I formation

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
01 oct. 2021
Accepted
27 oct. 2021
First published
27 oct. 2021

Faraday Discuss., 2022,234, 304-314

Exploring hitherto uninvestigated reactions of the fatty acid peroxygenase CYP152A1: catalase reaction and Compound I formation

H. Onoda, S. Tanaka, Y. Watanabe and O. Shoji, Faraday Discuss., 2022, 234, 304 DOI: 10.1039/D1FD00065A

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