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. 1990 Oct;56(10):2974–2983. doi: 10.1128/aem.56.10.2974-2983.1990

Fungal transformation of fluoranthene.

J V Pothuluri 1, J P Freeman 1, F E Evans 1, C E Cerniglia 1
PMCID: PMC184886  PMID: 2285310

Abstract

The fungus Cunninghamella elegans ATCC 36112 metabolized approximately 80% of the 3-14C-labeled fluoranthene (FA) added within 72 h of incubation. C. elegans metabolized FA to trans-2,3-dihydroxy-2,3-dihydrofluoranthene (trans-2,3-dihydrodiol), 8- and 9-hydroxyfluoranthene trans-2,3-dihydrodiol, 3-fluoranthene-beta-glucopyranoside, and 3-(8-hydroxyfluoranthene)-beta-glucopyranoside. These metabolites were separated by thin-layer and reversed-phase high-performance liquid chromatography and identified by 1H nuclear magnetic resonance, UV, and mass spectral techniques. The major pathway involved hydroxylation to form a glucoside conjugate of 3-hydroxyfluoranthene and a glucoside conjugate of 3,8-dihydroxyfluoranthene which together accounted for 52% of the total ethyl acetate-soluble metabolites. C. elegans initially metabolized FA in the 2,3 position to form fluoranthene trans-2,3-dihydrodiol, which has previously been shown to be a biologically active compound in mammalian and bacterial genotoxicity tests. However, C. elegans formed predominantly glucoside conjugates of the phenolic derivatives of FA, which suggests that this fungus has the potential to detoxify FA.

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Selected References

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