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- W4292809416 endingPage "115922" @default.
- W4292809416 startingPage "115922" @default.
- W4292809416 abstract "Benzo [a]pyrene (BaP) is a type of high-molecular-weight polycyclic aromatic hydrocarbons (PAHs) with potent carcinogenicity; however, there are limited studies on its degradation mechanism. Here, a strain of Pontibacillus sp. HN14 with BaP degradation ability was isolated from mangrove sediments in Dongzhai Port, Hainan Province. Our study showed that biodegradation efficiencies reached 42.15% after Pontibacillus sp. HN14 was cultured with 20 mg L-1 BaP as the sole carbon source for 25 days and still had degradability of BaP at a 25% high salinity level. Moreover, 9,10-dihydrobenzo [a]pyrene-7(8H)-one, an intermediate metabolite, was detected during BaP degradation in the HN14 strain. Genome analysis identified a gene encoding the CYP102(HN14) enzyme. The results showed that the E. coli strain with CYP102(HN14) overexpression could transfer BaP to 9,10-dihydrobenzo [a]pyrene-7(8H)-one with a conversion rate of 43.5%, indicating that CYP102(HN14) played an essential role in BaP degradation in Pontibacillus sp. HN14. Thus, our results provide a novel BaP biodegradation molecule, which could be used in BaP bioremediation in high salinity conditions. This study is the first to show that CYP102(HN14) had the BaP oxidization ability in bacteria. CYP102(HN14) could be essential in removing PAHs in saline-alkali soil and other high salt environments through enzyme immobilization." @default.
- W4292809416 created "2022-08-24" @default.
- W4292809416 creator A5011557785 @default.
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- W4292809416 creator A5088667241 @default.
- W4292809416 date "2022-11-01" @default.
- W4292809416 modified "2023-10-12" @default.
- W4292809416 title "Oxidization of benzo[a]pyrene by CYP102 in a novel PAHs-degrader Pontibacillus sp. HN14 with potential application in high salinity environment" @default.
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- W4292809416 doi "https://doi.org/10.1016/j.jenvman.2022.115922" @default.
- W4292809416 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36027730" @default.
- W4292809416 hasPublicationYear "2022" @default.
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