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Coenzyme A: a protective thiol in bacterial antioxidant defence

Gout, I; (2019) Coenzyme A: a protective thiol in bacterial antioxidant defence. Biochemical Society Transactions , 47 (1) pp. 469-476. 10.1042/BST20180415. Green open access

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Abstract

Coenzyme A (CoA) is an indispensable cofactor in all living organisms. It is synthesized in an evolutionarily conserved pathway by enzymatic conjugation of cysteine, pantothenate (Vitamin B5), and ATP. This unique chemical structure allows CoA to employ its highly reactive thiol group for diverse biochemical reactions. The involvement of the CoA thiol group in the production of metabolically active CoA thioesters (e.g. acetyl CoA, malonyl CoA, and HMG CoA) and activation of carbonyl-containing compounds has been extensively studied since the discovery of this cofactor in the middle of the last century. We are, however, far behind in understanding the role of CoA as a low-molecular-weight thiol in redox regulation. This review summarizes our current knowledge of CoA function in redox regulation and thiol protection under oxidative stress in bacteria. In this context, I discuss recent findings on a novel mode of redox regulation involving covalent modification of cellular proteins by CoA, termed protein CoAlation.

Type: Article
Title: Coenzyme A: a protective thiol in bacterial antioxidant defence
Open access status: An open access version is available from UCL Discovery
DOI: 10.1042/BST20180415
Publisher version: https://doi.org/10.1042/BST20180415
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: coenzyme A, low-molecular-weight thiols, post-translational modification, protein CoAlation, reactive oxygen species, redox regulation in bacteria
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Structural and Molecular Biology
URI: https://discovery.ucl.ac.uk/id/eprint/10071740
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