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The long-chain alkane metabolism network of Alcanivorax dieselolei

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  • Wanpeng Wang

    (State Key Laboratory Breeding Base of Marine Genetic Resources, Third Institute of Oceanography, SOA
    Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, SOA
    Key Laboratory of Marine Genetic Resources of Fujian Province
    Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources)

  • Zongze Shao

    (State Key Laboratory Breeding Base of Marine Genetic Resources, Third Institute of Oceanography, SOA
    Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, SOA
    Key Laboratory of Marine Genetic Resources of Fujian Province
    Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources)

Abstract

Alkane-degrading bacteria are ubiquitous in marine environments, but little is known about how alkane degradation is regulated. Here we investigate alkane sensing, chemotaxis, signal transduction, uptake and pathway regulation in Alcanivorax dieselolei. The outer membrane protein OmpS detects the presence of alkanes and triggers the expression of an alkane chemotaxis complex. The coupling protein CheW2 of the chemotaxis complex, which is induced only by long-chain (LC) alkanes, sends signals to trigger the expression of Cyo, which participates in modulating the expression of the negative regulator protein AlmR. This change in turn leads to the expression of ompT1 and almA, which drive the selective uptake and hydroxylation of LC alkanes, respectively. AlmA is confirmed as a hydroxylase of LC alkanes. Additional factors responsible for the metabolism of medium-chain-length alkanes are also identified, including CheW1, OmpT1 and OmpT2. These results provide new insights into alkane metabolism pathways from alkane sensing to degradation.

Suggested Citation

  • Wanpeng Wang & Zongze Shao, 2014. "The long-chain alkane metabolism network of Alcanivorax dieselolei," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6755
    DOI: 10.1038/ncomms6755
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    Cited by:

    1. Yixuan Liu & Weisi Li & Yanlu Qiao & Fangying Yu & Bowen Wang & Jianliang Xue & Mianmian Wang & Qing Jiang & Zhibin Zhou, 2022. "Study on the Changes in Immobilized Petroleum–Degrading Bacteria Beads in a Continuous Bioreactor Related to Physicochemical Performance, Degradation Ability, and Microbial Community," IJERPH, MDPI, vol. 19(18), pages 1-13, September.

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