Metagenomic discovery of polybrominated diphenyl ether biosynthesis by marine sponges
Journal Article
·
· Nature Chemical Biology
- Univ. of California, San Diego, CA (United States); OSTI
- Univ. of California, San Diego, CA (United States)
- Univ. of Utah, Salt Lake City, UT (United States)
- Smithsonian Marin Station, Fort Pierce, FL (United States)
- Univ. of Guam Marine Lab., Mangilao (Guam)
Naturally produced polybrominated diphenyl ethers (PBDEs) pervade the marine environment and structurally resemble toxic man-made brominated flame retardants. PBDEs bioaccumulate in marine animals and are likely transferred to the human food chain. However, the biogenic basis for PBDE production in one of their most prolific sources, marine sponges of the order Dysideidae, remains unidentified. Here, we report the discovery of PBDE biosynthetic gene clusters within sponge microbiome-associated cyanobacterial endosymbionts by employing an unbiased metagenome mining approach. By expression of PBDE biosynthetic genes in heterologous cyanobacterial hosts, we correlate the structural diversity of naturally produced PBDEs to modifications within PBDE biosynthetic gene clusters in multiple sponge holobionts. Our results establish the genetic and molecular foundation for the production of PBDEs in one of the most abundant natural sources of these molecules, further setting the stage for a metagenomic-based inventory of other PBDE sources in the marine environment.
- Research Organization:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- EE0003373
- OSTI ID:
- 1463262
- Journal Information:
- Nature Chemical Biology, Journal Name: Nature Chemical Biology Journal Issue: 5 Vol. 13; ISSN 1552-4450
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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