Significance of both alkB and P450 alkane-degrading systems in Tsukamurella tyrosinosolvens: proteomic evidence

Journal
Applied microbiology and biotechnology  
Volume
106
Issue
8
Start Page
3153
End Page
3171
Citation
Applied Microbiology and Biotechnology 106 (8): 3153-3171 (2022-04)
Publisher DOI
10.1007/s00253-022-11906-1
Scopus ID
2-s2.0-85127745731
PubMed ID
35396956
Publisher
Springer
Abstract: The Tsukamurella tyrosinosolvens PS2 strain was isolated from hydrocarbons-contaminated petrochemical sludge as a long chain alkane-utilizing bacteria. Complete genome analysis showed the presence of two alkane oxidation systems: alkane 1-monooxygenase (alkB) and cytochrome P450 monooxygenase (P450) genes with established high homology to the well-known alkane-degrading actinobacteria. According to the comparative genome analysis, both systems have a wide distribution among environmental and clinical isolates of the genus Tsukamurella and other members of Actinobacteria. We compared the expression of different proteins during the growth of Tsukamurella on sucrose and on hexadecane. Both alkane monooxygenases were upregulated on hexadecane: AlkB—up to 2.5 times, P450—up to 276 times. All proteins of the hexadecane oxidation pathway to acetyl-CoA were also upregulated. Accompanying proteins for alkane degradation involved in biosurfactant synthesis and transport of organic and inorganic molecules were increased. The change in the carbon source affected the pathways for the regulation of translation and transcription. The proteomic profile showed that hexadecane is an adverse factor causing activation of general and universal stress proteins as well as shock and resistance proteins. Differently expressed proteins of Tsukamurella tyrosinosolvens PS2 shed light on the alkane degradation in other members of Actinobacteria class. Key Points: • alkB and P450 systems have a wide distribution among the genus Tsukamurella. • alkB and P450 systems have coexpression with the predominant role of P450 protein. • Hexadecane causes significant changes in bacterial proteome. Graphical abstract: [Figure not available: see fulltext.]
Subjects
Alkane degradation
Alkane hydroxylase
alkB
P450
Quantitative proteomics
Tsukamurella tyrosinosolvens
DDC Class
570: Biowissenschaften, Biologie
600: Technik
More Funding Information
This research has been supported by the Kazan Federal University Strategic Academic Leadership Program (PRIORITY-2030).