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Todd, Jonathan D., Curson, Andrew R. J., Nikolaidou-Katsaraidou, Nefeli, Brearley, Charles A. 
ORCID: https://orcid.org/0000-0001-6179-9109, Watmough, Nicholas J., Chan, Yohan, Bulman Page, Philip C., Sun, Lei and Johnston, Andrew W. B.
(2010)
Molecular dissection of bacterial acrylate catabolism - unexpected links with dimethylsulfoniopropionate catabolism and dimethyl sulfide production.
Environmental Microbiology, 12 (2).
pp. 327-343.
ISSN 1462-2920
Abstract
A bacterium in the genus Halomonas that grew on dimethylsulfoniopropionate (DMSP) or acrylate as sole carbon sources and that liberated the climate-changing gas dimethyl sulfide in media containing DMSP was obtained from the phylloplane of the macroalga Ulva. We identified a cluster that contains genes specifically involved in DMSP catabolism (dddD, dddT) or in degrading acrylate (acuN, acuK) or that are required to break down both substrates (dddC, dddA). Using NMR and HPLC analyses to trace 13C- or 14C-labelled acrylate and DMSP in strains of Escherichia coli with various combinations of cloned ddd and/or acu genes, we deduced that DMSP is imported by the BCCT-type transporter DddT, then converted by DddD to 3-OH-propionate (3HP), liberating dimethyl sulfide in the process. As DddD is a predicted acyl CoA transferase, there may be an earlier, unidentified catabolite of DMSP. Acrylate is also converted to 3HP, via a CoA transferase (AcuN) and a hydratase (AcuK). The 3HP is predicted to be catabolized by an alcohol dehydrogenase, DddA, to malonate semialdehyde, thence by an aldehyde dehydrogenase, DddC, to acyl CoA plus CO2. The regulation of the ddd and acu genes is unusual, as a catabolite, 3HP, was a co-inducer of their transcription. This first description of genes involved in acrylate catabolism in any organism shows that the relationship between the catabolic pathways of acrylate and DMSP differs from that which had been suggested in other bacteria.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | sdg 13 - climate action ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action |
| Faculty \ School: | Faculty of Science > School of Biological Sciences Faculty of Science > School of Chemistry (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Groups > Molecular Microbiology Faculty of Science > Research Groups > Environmental Biology Faculty of Science > Research Groups > Resources, Sustainability and Governance (former - to 2018) Faculty of Science > Research Groups > Plant Sciences Faculty of Science > Research Groups > Synthetic Chemistry (former - to 2017) Faculty of Science > Research Groups > Chemistry of Materials and Catalysis Faculty of Science > Research Centres > Centre for Molecular and Structural Biochemistry |
| Depositing User: | EPrints Services |
| Date Deposited: | 01 Oct 2010 13:36 |
| Last Modified: | 24 Sep 2024 09:16 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/264 |
| DOI: | 10.1111/j.1462-2920.2009.02071.x |
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